Lefin PC Strand
Lefin PC Strand
Lefin PC Strand
PC Strand and PC Wire
Advanced Technology
TIANJIN LEFIN INDUSTRIAL CO.,LTD Modern Management
Add:Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China Scientific Inspection
Product Standard
Mob:008615122229899(whatsapp)
Email: lefinsteel@gmail.com Project in Use
ericli@lefinsteel.com Mob:008615122229899(whatsapp)
Email: lefinsteel@gmail.com
Web: www.lefinsteel.com
ericli@lefinsteel.com
Web: www.lefinsteel.com
Advanced Technology
The production equipments, lab facilities and test
instruments of our company are all of the top level around
the world. We can finish production according to the local
standard in different countries.
TIANJIN LEFIN STEEL GROUP containing Tianjin LEFIN Industrial Co.,Ltd. 、Tianjin LEFIN STEEL
import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. Its total assets is more
than 30 million USD and our mills totally has more than 60,000 Square meters.The annual production of
welded tube is more than 300000 tons per year. There are more than 300 employees and 20 engineers
now. We have own lab to make sure every order quality .
It is located in Hengtai Road, Daqiuzhuang Town,Tianjin city,china. It is joined with Tuanbo New Town
and adjoins Jing-jin-Tang Speed highway. Our mills is about 40 Kilometers to Tianjin Port and Binhai
airport .The convenience traffic and dominant geographical position make it developing well in the
future.
Mill produces according to ISO9001-2000 quality control system strictly. It has advanced equipments
and technology so that can meet the demands of clients in maximum.
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First-class Equipment Best Making Supervise the Whole Process First Class Quality
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PC. Wire 预应力钢丝 ASTM A421-1998
GB/T 5223-2003 Nominal Min Min.Strength at 1% Extension
Relaxation
Min.Strength Diameter Tensile Strength 1%延伸应率时最小应力 Min. 松弛
at 0.2% Non- 公称直径 最小强度 MPa 不小于 MPa Elongation
proportional Perverse bend Type Type Type Type 最小延长率 Initial Strength 1000h Value
Elongation Relaxation L0=250mm
Nominal Extension 反复弯曲L0≥ in mm BA WA BA WA Nominal Min. no more than
ar Max.Load 松弛
MPa MPa MPa MPa Tensile Strength Normal
Nominal Nominal Tensile 0.2%规定非比例 500mm
Type (L0=200mm)
Diameter Area Strength 延伸应力 0.192 4.88 - 1725 - 1465
最大力下总
公称直径 公称面 抗拉强度 不小于 MPa
型号 延伸率 0.196 4.98 1655 1725 1407 1465 70% 2.5%
mm 积mm2 不小于 Bend Initial 1000h Value
不小于 4.0%
MPa Bend Load no more than
No less than Times 0.250 6.35 1655 1655 1407 1407 80% 3.5%
WLR WNR 弯曲次数 Radius Nominal
不小于 mm Tensile WLR WNR 0.276 7.01 1620 1620 1377 1377
(次/180o) Strength
4.00 12.57 1470 1290 1250 3 10 BS 5896-1980
4.80 18.10 1570 1380 1330
Min. Ductility Test Relaxation
1670 1470 1410 Load
Smooth Nominal Min. Elongation 韧性试验 松弛
5.00 19.63 1770 1560 1500 15 Nominal Nominal at 1%
indented 1860 1640 1580 Tensile Breaking at Max Reverse Bends Initial 1000h Value
60% 1.0% 4.5% Diameter Area Elongation
helical 6.00 28.27 1470 1290 1250 Strength Load Load 反复弯曲 Load No more than
公称直径 公称面积 2% 非比例
rib
6.25 30.68 1570 1380 1330 3.5% 70% 2.5% 8% mm
抗拉强度
mm2
最小破断
延长负荷
最小伸 Bends Times Bend Radius Actual Relax Relax
消除应 1670 1470 1410 4 MPa 负荷kN 长率 弯曲半径 Breaking Class Class
7.00 38.48 20 kN 弯曲次数
力光面 1770 1560 1500 L0=200mm 不小于(次/180o) mm Load 1 2
80% 4.5% 12%
及螺旋
8.00 50.26 1470 1290 1250 7 1570 60.4 51.3
肋钢丝
9.00 63.62 1570 1380 1330 38.5 4 times for 20
7 1670 64.3 54.3
25 smooth
10.00 78.54 6 1670 47.3 40.2
1470 1290 1250 28.3 wires 15 60% 4.5% 1.0%
12.00 113.1 30 6 1770 50.1 42.6 光面钢丝
5 1670 32.7 21.8 3.5% 70% 8% 2.5%
19.6 15
AS 1310-1987 5 1770 34.7 29.5 3 times for
Range of 4.5 1620 15.9 25.8 21.9 indented 15 80% 125 4.5%
Tensile Min. Perverse bend wires
Relaxation 4 1670 21.3 17.9
Strength Strength at 反复弯曲L0≥ 12.6 刻痕钢丝 10
松弛 4 1670 22.3 19.0
强度范围 0.2% Non- Min. 500mm
Nominal
Type Tolerance MPa proportional Elongation
Diameter
公称直径
直径偏差 Extension after fracture Bend Initial JIS G 3536-1994
型号 mm 0.2%规定非 断后延长率 Times Strength 1000h Value
mm Bend Min. Min.Load at 0.2% Relaxation
比例延伸应 L0=250mm 弯曲 Nominal no more than Nominal Diameter Min. Elongation
Min Max 力 Radius Type Breaking Non-proportional 松弛
次数 Min. Diameter Tolerance L0=100mm
不小于 MPa mm Load Extension Initial Load 1000h Value no
不小于 Tensile 公称直径 直径偏差 最小伸长率
(次/180o) Strength Normal Low 型号 破断负荷 0.2%规定非比例延 Nominal more than
mm mm %
Cold 2.0 kN 伸应力 kN Breaking Load Normal Low
drawn 75% Min. 2.9 ±0.03 12.7 11.30
2000 2250
wire ±0.025 Tensile 1.5% …… …… …… …… …… 3.5
2.5 1850 2100 4 ±0.04 21.1 18.60
冷拉 Strength
钢丝 SWPR1AN 5 31.9 27.90
3.0 10 70% 6.5% 2.0% SWPR1AL 4.0
1700 1950 2.5% 6 ±0.05 44.1 38.70
3.0 1850 2100 10 SWPD1N
Round
wire and 4.0 1700 1950 10 SWPD1L 7 58.3 51.00
All the 80% 8.5% 3.0% 70% 8.0% 2.5%
indented 5.0 1550 18000 15 8 74.0 64.20 4.5
± 0.005 85% Min. wire 3
wire 5.0 1700 1950 15 ±0.06
1550 1800 Tensile times 9 90.2 78.00
消除应 7.0 20
1620 1870 Strength 3.5% without
力光面 7.0 fracture 20 5 33.8 29.90 4.0
及刻痕 1700 1950 ±0.05
7.0 20 SWPR1BN 7 62.3 54.90
钢丝 4.5
8.0 1450 1700 25
± 0.075 8 ±0.06 78.9 69.10
8.0 1550 1800 25
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P.C Bar 预应力异型钢棒
YB/T 111-1997
Min.Strength at 0.2% Min. Elongation Relaxation
Nominal Diameter Tensile Non-proportional after fracture 松弛
Type Diameter Tolerance Strength Extension 最小破断后 1000h value
Initial Load
0.2%规定非比例 no more than
Project in Use
型号 公称直径 直径偏差 抗拉强度 延长率
Nominal Tensile
mm mm MPa 延伸应力 L0=8D mm SBPDN SBPDL
strength
MPa 不小于 SBPRN SBPRL
7.1
1080 930 High tensile prestressed products are widely
SBPDN 9.0
…… 1230 1080
SBPDL 10.7 used in the high tech product iron and steel
1420 1275
12.6
field and the building construction industry.
9.2
5% 70% 4.0% 2.5% Prestressed steel wire strand was first used
11.0 1030 785
SBPRN 13.0 1080 930 in the construction of Golden Gate Bridge
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SBPRL (15.0) 1180 930
17.0 1230 1080 in U.S.A. in the 1930’. Since then, it has
(19.0) been used in the increasingly wide range of
applications. At present, it is mainly used in
JIS G 3137-1994
large-scale irrigation works, gigantic bridges,
Nominal Tensile Min.Strength at 0.2% Non- Min. Elongation Relaxation 松弛
Type Diameter Strength proportional Extension after fracture Initial load 1000h value spanning major rivers, express ways, railway
型号 公称直径 抗拉强度 0.2%规定非比例延伸应力 最小破断后延长率 Nominal Tensile No more than
projects, nuclear power stations, high rise
mm MPa MPa 不小于L0=8D mm Strength SBPDN SBPDL
7.1 buildings and mineral pit structures, tunnels
1080 930
SBPDN 9.0
1230 1080 5% 70% 4.0% 2.5% and rock anchors.
SBPDL 10.7
1420 1275
12.6
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