CN105155565B - The device and construction method of a kind of basis suspention pre-embedded bolt - Google Patents
The device and construction method of a kind of basis suspention pre-embedded bolt Download PDFInfo
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- CN105155565B CN105155565B CN201510646509.8A CN201510646509A CN105155565B CN 105155565 B CN105155565 B CN 105155565B CN 201510646509 A CN201510646509 A CN 201510646509A CN 105155565 B CN105155565 B CN 105155565B
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000013011 mating Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 241000276425 Xiphophorus maculatus Species 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 239000002355 dual-layer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a kind of device of basis suspention pre-embedded bolt and construction method, belong to building foundation technique for fixing field.The device of the basis suspention pre-embedded bolt of the present invention, including hanging beam, shank of bolt, nut, one-level coaming plate and positioning correcting plate, one-level coaming plate is the square pond shape structure formed a circle with flat board, hanging beam has 2, one-level coaming plate upper surface centre position is flat in Parallel Symmetric state, positioning correcting plate is the positioning hole that mating connection shank of bolt is provided with square platy structure, hanging beam and positioning correcting plate；Nut includes upper cap nut and lower nut；The upper end of shank of bolt is provided with screw thread, sequentially pass through the positioning hole of hanging beam and positioning correcting plate, and the position between hanging beam and positioning correcting plate is fixed by upper cap nut and lower nut, upper cap nut is fixed on positioning correcting plate lower surface, and lower nut is fixed on the upper surface of hanging beam.The present invention realizes simple manufacture craft, easy construction, concerned process steps influence less, the easy to adjust, construction precision of inspection is high, efficiency high purpose.
Description
Technical field
The invention belongs to building foundation technique for fixing field, specifically a kind of basis is suspended the device of pre-embedded bolt in midair and applied
Work method.
Background technology
The installation of existing pre-embedded bolt is reinforced, and is generally welded in reinforcement foundation on the net using by pre-embedded bolt point, or frequently with
Reinforcing bar, shaped steel are welded in foundation concrete sets tripod bracing reinforcement, but line setting difficulty is big one by one to pre-embedded bolt, and welding capacity is big
And screw rod of easily burning, steel are wasted, and easily cause in concreting bolt off normal.
Current existing conventional steel-column foundation pre-embedded bolt construction method, usual way is：
1) many bolts are uniformly fixed on the positioning orifice plate for holding hole successfully first.
2) with the welding such as reinforcing bar, steel scrap bar or angle steel, each bolt auxiliary steel member (reinforcing bar etc.) welding is interfixed, welded
It is connected into square stool.
3) the bolt square stool welded is hung in into basis, scene centering in place welds support and foundation bottom reinforcing bar from bottom again
It is welded and fixed, top is fixed with side form spot welding again.
The steel-column foundation bolt embedment particular problem carried out with the construction method has：Construction centering adjusts difficult, complicated again,
It is inconvenient；Working procedure is more, and auxiliary loss material used is more, makes complicated, the required support used and skeleton reinforcing steel bar etc. are auxiliary
Help waste of material it is non-reusable, be lost it is many；Engineering time length, loss material are more, and cost is high, uneconomical.
China Patent Publication No.：CN102518145A, publication date：2012.06.27 patent document disclose a kind of equipment
Basis in column, the overall positioning reinforcing device of pre-embedded bolt in groups, it is characterized in that setting up pre-buried in the top of foundation forms framework
Bolt positions ladder, is setting the support frame of positioning ladder, positioning ladder master on the outside of the left and right of foundation forms framework on ground
To be made up of left and right main beam, longeron I and vertical beam I, groups of pre-embedded bolt hole in column be opened up on the main beam of left and right, each pre-
Bury and guard ring is embedded in bolt hole and pre-embedded bolt is installed, be set with packing ring in each pre-embedded bolt upper end section and hypomere and be screwed
Adjusting nut and locking nut, correspondence is located at positioning ladder from front to back on the left right lateral ground of foundation forms framework
On the position of each left and right vertical beam I be respectively mounted support frame, the support frame is main by longeron II, left and right vertical beam II, left and right diagonal brace
With left and right spud pile composition, between left-right template, ladder and support frame will be positioned by groups of pre-embedded bolt integral hanging in column
Reuse can be pulled down.The invention has used the crossbeam, longeron and vertical beam of batch to be positioned, and installs complicated, the engineering time compared with
It is long.
The content of the invention
1. the technical problem to be solved
Installation for pre-embedded bolt in the prior art is reinforced and there is construction centering to adjust difficult, working procedure again more, auxiliary
The problem of helping many loss materials, making complexity, engineering time length, many loss materials, the invention provides a kind of basis suspention in advance
Bury the device and construction method of bolt.It can realize that simple manufacture craft, easy construction, concerned process steps influence less, check and adjust
Perfect square is just, construction precision is high, the purpose of efficiency high.
2. technical scheme
The present invention program is carried out in the following manner：
A kind of device of basis suspention pre-embedded bolt, including hanging beam, shank of bolt, nut, one-level coaming plate and positioning correcting plate,
Wherein：One-level coaming plate is the square pond shape structure formed a circle with flat board, and hanging beam has 2, is long strip-board shape, in Parallel Symmetric state
One-level coaming plate upper surface centre position is flat on, positioning correcting plate is to be provided with square platy structure, hanging beam and positioning correcting plate
The positioning hole of mating connection shank of bolt；Nut includes upper cap nut and lower nut；The upper end of shank of bolt is provided with screw thread, sequentially passes through and hangs
The positioning hole of beam and positioning correcting plate, and position between hanging beam and positioning correcting plate fixed by upper cap nut and lower nut,
Upper cap nut is fixed on positioning correcting plate lower surface, and lower nut is fixed on the upper surface of hanging beam.
Preferred scheme：Shank of bolt is 6, and the positioning hole of corresponding hanging beam and positioning correcting plate is also 6.
Preferred scheme：The bottom of shank of bolt is fixedly connected with support, and the bottom plate of support is fixedly connected with the bottom of shank of bolt,
The equally distributed reinforcement of taper is also fixedly connected between shank of bolt and bottom plate.
Preferred scheme：The bottom of one-level coaming plate is connected with two grades of coaming plates that area is more than one-level coaming plate, and one-level coaming plate is located at
The position of two grades of coaming plate geometric centers, the bottom of two grades of coaming plates of one-level coaming plate is provided with steel grid.
Preferred scheme：The bottom of two grades of coaming plates is connected with three-level coaming plate of the area more than two grades of coaming plates, and two grades of coaming plates are located at
The position of three-level coaming plate geometric center.
Further scheme：Positioning correcting plate is marked with the position line in length and breadth of " ten " font distribution.
The construction method of the device of pre-embedded bolt is suspended on a kind of basis in midair, and its step is：
A, steel grid is laid in foundation ditch；
B, fix 1~3 layer of coaming plate on steel grid, the superiors' coaming plate is one-level coaming plate；
C, 2 hanging beams in Parallel Symmetric state are flat on one-level coaming plate upper surface centre position；
D, the positioning hole that shank of bolt is sequentially passed through to hanging beam and positioning correcting plate；
E, the position between hanging beam and positioning correcting plate are fixed by upper cap nut and lower nut, and upper cap nut is scheduled on into positioning
Correcting plate lower surface, lower nut is fixed on the upper surface of hanging beam；
F, by rotate upper cap nut and lower nut regulating bolt bar height；
G, the axis absolute altitude by measuring shank of bolt and perpendicularity, rotate lower nut adjustment hanging beam, rotate upper cap nut adjustment
Positioning correcting plate, final fixing bolt bar and the perpendicularity and positioning precision for controlling shank of bolt.
Further arrangement and method for construction：In step G, the position line in length and breadth for " ten " font distribution being marked with along positioning correcting plate
Carry out the detection of the perpendicularity of shank of bolt.
Further arrangement and method for construction：It is fixed between the corner location of coaming plates at different levels, the side plate of two coaming plates in step B
There is reinforcing plate.
Further arrangement and method for construction：In step D, the diameter of the positioning hole of hanging beam and positioning correcting plate is more than the straight of shank of bolt
Footpath.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of device of basis suspention pre-embedded bolt of the invention, passes through the simple of hanging beam, nut and positioning correcting plate
After the completion of combination and collocation, i.e. foundation ditch installation are fixed, hanging beam is installed, plane positioning shank of bolt slings shank of bolt (mark with lower nut
Height is adjustable), upper cap nut adjustment stationary positioned correcting plate, hanging beam Hanging bolt bar is preliminary fixed after measurement and positioning, centering,
Pass through the secondary fixation of positioning correcting plate, repetition measurement, Dual-layer stationary positioned pre-embedded bolt bar, it is ensured that the perpendicularity of shank of bolt；It is real
Simple manufacture craft, easy construction are showed, concerned process steps influence less, the easy to adjust, construction precision of inspection is high, efficiency high mesh
's；Moreover, hanging beam, coaming plate, nut and positioning correcting plate can be reused, it is easy to make, cost-effective；
(2) device of a kind of basis suspention pre-embedded bolt of the invention, shank of bolt and corresponding hanging beam and positioning correcting plate
Positioning hole be 6, be equipped with, 6 shanks of bolt synergy, construction precision is higher；
(3) a kind of device of basis suspention pre-embedded bolt of the invention, the setting of support improves shank of bolt in concrete
Stability；The setting of reinforcement, improves the stability of support and shank of bolt connection；
(4) a kind of device of basis suspention pre-embedded bolt of the invention, the setting of two-stage coaming plate, the concrete of making is in two
Level is step-like, it is adaptable to the big concrete foundation of continuing surface；
(5) a kind of device of basis suspention pre-embedded bolt of the invention, the setting of three-level coaming plate, it is adaptable to which continuing surface is small
Concrete foundation, improves the versatility of whole device；
(6) setting of the device, in length and breadth position line of a kind of basis suspention pre-embedded bolt of the invention, is easy to measure during measurement
Point and the positioning in face, improve the accuracy of measurement；
(7) a kind of construction method of the device of basis suspention pre-embedded bolt of the invention, step is easy, easy construction, spiral shell
Bolt suspention is carried out after the completion of being embedded in coaming plate construction, once adjusts in place, precision is high, efficiency of construction is high；
(8) a kind of construction method of the device of basis suspention pre-embedded bolt of the invention, the setting of reinforcing plate improves coaming plate
The stability of side plate connection；
(9) construction method of the device of a kind of basis suspention pre-embedded bolt of the invention, hanging beam and positioning correcting plate are determined
The diameter in position hole is more than the diameter of shank of bolt, facilitates the interspersed of shank of bolt.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is top view of the present invention；
Fig. 3 is stereogram of the present invention.
In figure：1st, hanging beam；2nd, upper cap nut；3rd, lower nut；4th, positioning correcting plate；5th, shank of bolt；6th, support；7th, positioning hole；
8th, one-level coaming plate；9th, two grades of coaming plates；10th, position line in length and breadth；61st, bottom plate；62nd, reinforcement.
Embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
The device of the basis suspention pre-embedded bolt of the present embodiment, as shown in figure 1, including hanging beam 1, shank of bolt 5, nut, one
Level coaming plate 8 and positioning correcting plate 4, wherein：As shown in Figures 2 and 3, one-level coaming plate 8 is the square pond shape structure formed a circle with flat board,
Specification is 60mm*60mm, and hanging beam 1 has 2, is splat, and thickness is 35mm, width 120mm, length 1200mm, in parallel
Symmetry status is flat on the upper surface centre position of one-level coaming plate 8, and positioning correcting plate 4 is square platy structure, and specification is 50mm*
The positioning hole 7 of mating connection shank of bolt 5, a diameter of 5mm are provided with 40mm, hanging beam 1 and positioning correcting plate 4；Nut includes upper spiral shell
Cap 2 and lower nut 3；The upper end of shank of bolt 5 is provided with screw thread, and a diameter of 3mm sequentially passes through the positioning of hanging beam 1 and positioning correcting plate 4
Hole 7, and position between hanging beam 1 and positioning correcting plate 4 fixed by upper cap nut 2 and lower nut 3, upper cap nut 2 is fixed on fixed
The lower surface of bit correction plate 4, lower nut 3 is fixed on the upper surface of hanging beam 1.
The construction method of the device of pre-embedded bolt is suspended on the basis of the present embodiment in midair, and its step is：
A, steel grid is laid in foundation ditch；
B, fix 2 layers of coaming plate on steel grid, the superiors' coaming plate is one-level coaming plate 8；
C, 2 hanging beams 1 in Parallel Symmetric state are flat on the upper surface centre position of one-level coaming plate 8；
D, the positioning hole 7 that shank of bolt 5 is sequentially passed through to hanging beam 1 and positioning correcting plate 4；
E, the position between hanging beam 1 and positioning correcting plate 4 are fixed by upper cap nut 2 and lower nut 3, and upper cap nut 2 is consolidated
The lower surface of positioning correcting plate 4 is scheduled on, lower nut 3 is fixed on the upper surface of hanging beam 1；
F, by rotating upper cap nut 2 and the height of lower 3 regulating bolt bar of nut 5；
G, the axis absolute altitude by measuring shank of bolt 5 and perpendicularity, rotate the lower adjustment hanging beam 1 of nut 3, rotate upper cap nut 2
Adjust positioning correcting plate 4, final fixing bolt bar 5 and the perpendicularity and positioning precision for controlling shank of bolt 5.
The device and construction method of the basis suspention pre-embedded bolt of the present embodiment, pass through hanging beam 1, nut and positioning correcting plate
After the completion of 4 simple combination and collocation, i.e. foundation ditch installation are fixed, hanging beam 1 is installed, plane positioning shank of bolt 5 is hung with lower nut 3
Play shank of bolt 5 (absolute altitude can adjust), the adjustment stationary positioned of upper cap nut 2 correcting plate 4, the Hanging bolt bar 5 of hanging beam 1, measurement and positioning,
It is preliminary fixed after centering, pass through positioning correcting plate 4 two fixations, repetition measurements, Dual-layer stationary positioned pre-embedded bolt bar 5, it is ensured that
The perpendicularity of shank of bolt 5；Realize simple manufacture craft, easy construction, concerned process steps influence less, inspection is easy to adjust, construction
Precision is high, the purpose of efficiency high；Moreover, hanging beam 1, coaming plate, nut and positioning correcting plate 4 can be reused, easy to make,
It is cost-effective.
Embodiment 2
The device of the basis suspention pre-embedded bolt of the present embodiment, basic structure be the same as Example 1 is theed improvement is that：Bolt
Bar 5 is 6, and the positioning hole 7 of corresponding hanging beam 1 and positioning correcting plate 4 is also 6, is equipped with, and 6 collaborations of shank of bolt 5 are made
With construction precision is higher；The bottom of shank of bolt 5 is fixedly connected with support 6, and the bottom plate 61 of support 6 and the bottom of shank of bolt 5 are fixed
Connection, improves stability of the shank of bolt 5 in concrete, taper is also fixedly connected between shank of bolt 5 and bottom plate 61 and is uniformly divided
The reinforcement 62 of cloth, improves support 6 and shank of bolt connects 5 stability connect；The bottom of one-level coaming plate 8 is connected with area more than one-level
Two grades of coaming plates 9 of coaming plate 8, one-level coaming plate 8 is located at the position of two grades of geometric centers of coaming plate 9, two grades of coaming plates 9 of one-level coaming plate 8
Bottom is provided with steel grid；The bottom of two grades of coaming plates 9 is connected with three-level coaming plate of the area more than two grades of coaming plates 9, two grades of coaming plates 9
Positioned at the position of three-level coaming plate geometric center, the concrete foundation small for continuing surface improves the versatility of whole device；It is fixed
Bit correction plate 4 is marked with position line 10 in length and breadth of " ten " font distribution, the positioning in measurement point and face when being easy to measure, and improves measurement
Accuracy；The diameter of the positioning hole 7 of hanging beam 1 and positioning correcting plate 4 is more than the diameter of shank of bolt 5, facilitates shank of bolt 5 in positioning
It is interspersed in hole 7.
The construction method of the device of the basis suspention pre-embedded bolt of the present embodiment, basic step be the same as Example 1, difference
It is：In step G, the position line in length and breadth 10 for " ten " font distribution being marked with along positioning correcting plate 4 carries out the vertical of shank of bolt 5
The detection of degree.
Embodiment 3
A kind of construction method of the device of the basis suspention pre-embedded bolt of the present embodiment, its basic step be the same as Example 2, no
It is with part：In step B, reinforcing plate is fixed between the corner location of coaming plates at different levels, the side plate of two coaming plates, raising is enclosed
The stability of plate side plate connection.
Schematically the invention and embodiments thereof are described above, the description is not restricted.So,
If one of ordinary skill in the art is enlightened by it, in the case where not departing from this creation objective, without creative design
Go out the frame mode similar to the technical scheme and embodiment, the protection domain of this patent all should be belonged to.
Claims (2)
1. it is a kind of basis suspention pre-embedded bolt device, including hanging beam (1), shank of bolt (5), nut, one-level coaming plate (8), two grades
Coaming plate (9) and three-level coaming plate, it is characterised in that：Also include positioning correcting plate (4), wherein：
The one-level coaming plate (8) is the square pond shape structure formed a circle with flat board, and the hanging beam (1) has 2, is long strip-board shape,
One-level coaming plate (8) upper surface centre position is flat in Parallel Symmetric state, the positioning correcting plate (4) is square tabular knot
The positioning hole (7) of mating connection shank of bolt (5) is provided with structure, hanging beam (1) and positioning correcting plate (4)；
The nut includes upper cap nut (2) and lower nut (3)；
The upper end of the shank of bolt (5) is provided with screw thread, sequentially passes through the positioning hole (7) of hanging beam (1) and positioning correcting plate (4), and
Position between hanging beam (1) and positioning correcting plate (4) is fixed by upper cap nut (2) and lower nut (3), and upper cap nut (2) is fixed
In positioning correcting plate (4) lower surface, lower nut (3) is fixed on the upper surface of hanging beam (1)；
The shank of bolt (5) is 6, and the positioning hole (7) of corresponding hanging beam (1) and positioning correcting plate (4) is also 6；
The bottom of the shank of bolt (5) is fixedly connected with support (6), and the bottom plate (61) of support (6) and the bottom of shank of bolt (5) are solid
Fixed connection, is also fixedly connected with the equally distributed reinforcement of taper (62) between shank of bolt (5) and bottom plate (61)；
The diameter of the positioning hole (7) of the hanging beam (1) and positioning correcting plate (4) is more than the diameter of shank of bolt (5)；
The bottom of the one-level coaming plate (8) is connected with two grades of coaming plates (9) that area is more than one-level coaming plate (8), one-level coaming plate (8) position
In the position of two grades of coaming plate (9) geometric centers, the bottom of two grades of coaming plates (9) of one-level coaming plate (8) is provided with steel grid；
The bottom of two grades of coaming plates (9) is connected with three-level coaming plate of the area more than two grades of coaming plates (9), and two grades of coaming plates (9) are located at
The position of three-level coaming plate geometric center；
The positioning correcting plate (4) is marked with the position line in length and breadth (10) of " ten " font distribution；
Reinforcing plate is fixed between the corner location of coaming plates at different levels, the side plate of two coaming plates.
2. the construction method of the device of pre-embedded bolt is suspended on a kind of basis according to claim 1 in midair, its step is：
A, steel grid is laid in foundation ditch；
B, fix three layers of coaming plate on steel grid, the superiors' coaming plate is one-level coaming plate (8)；
C, 2 hanging beams (1) in Parallel Symmetric state are flat on one-level coaming plate (8) upper surface centre position；
D, the positioning hole (7) that shank of bolt (5) is sequentially passed through to hanging beam (1) and positioning correcting plate (4)；
E, the position between hanging beam (1) and positioning correcting plate (4) are fixed by upper cap nut (2) and lower nut (3), by upper cap nut
(2) positioning correcting plate (4) lower surface is fixed on, lower nut (3) is fixed on the upper surface of hanging beam (1)；
F, by rotate upper cap nut (2) and lower nut (3) regulating bolt bar (5) height；
G, the axis absolute altitude by measuring shank of bolt (5) and perpendicularity, rotate lower nut (3) adjustment hanging beam (1), rotate upper cap nut
(2) adjustment positioning correcting plate (4), final fixing bolt bar (5) and the perpendicularity and positioning precision for controlling shank of bolt (5)；
In step G, the position line in length and breadth (10) for " ten " font distribution being marked with along positioning correcting plate (4) carries out hanging down for shank of bolt (5)
The detection directly spent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646509.8A CN105155565B (en) | 2015-09-30 | 2015-09-30 | The device and construction method of a kind of basis suspention pre-embedded bolt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646509.8A CN105155565B (en) | 2015-09-30 | 2015-09-30 | The device and construction method of a kind of basis suspention pre-embedded bolt |
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| CN105155565A CN105155565A (en) | 2015-12-16 |
| CN105155565B true CN105155565B (en) | 2017-10-17 |
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| CN201510646509.8A Active CN105155565B (en) | 2015-09-30 | 2015-09-30 | The device and construction method of a kind of basis suspention pre-embedded bolt |
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| CN106006361A (en) * | 2016-06-30 | 2016-10-12 | 中国五冶集团有限公司 | Pre-buried bolt assembly |
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| JP5526001B2 (en) * | 2010-11-17 | 2014-06-18 | 株式会社東芝 | Foundation-based level adjustment method and foundation-base fixing method |
| CN103174166B (en) * | 2013-03-27 | 2015-09-16 | 中国京冶工程技术有限公司 | A kind of recreation facility built-in fitting of complete integral installation and mounting method thereof |
| CN103590416B (en) * | 2013-11-01 | 2016-03-16 | 浙江水利水电学院 | Foot bolt Embedment Construction engineering method accurately |
| CN204225145U (en) * | 2014-10-20 | 2015-03-25 | 中国建筑第六工程局有限公司 | A kind of simple and easy orientation tool for basic embedding anchor bolts |
| CN204475363U (en) * | 2014-12-15 | 2015-07-15 | 中国十七冶集团有限公司 | A kind of major diameter pre-embedded bolt fixing device for installing |
| CN205024709U (en) * | 2015-09-30 | 2016-02-10 | 安徽马钢工程技术集团有限公司 | Buried bolt's device is in advance suspended in midair on basis |
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Effective date of registration: 20240122 Address after: 243000 No. 1889 Taibai Road, Ma'anshan economic and Technological Development Zone, Anhui Patentee after: MASTEEL DESIGN & RESEARCH INSTITUTE Co.,Ltd. Country or region after: China Address before: 243000 No. 1889 Taibai Road, Ma'anshan economic and Technological Development Zone, Anhui Patentee before: ANHUI MASTEEL ENGINEERING & TECHNOLOGY GROUP Co.,Ltd. Country or region before: China |