Brief Introduction
Electric Resistance Welded Pipe
Longitudinal electric resistance welded steel Pipe/tubeS355/ST52 LSAW/DSAW Carbon Steel Pipe
O.D
O.D tolerance
W.T
Thickness Tolerance
21.34—3200mm
±0.03
0.6—30mm
±0.02
Length
2—12m, according to the customers’requirements
International Standard
ISO9001-2000
Standard
ASTM A53 / BS 1387-1985, API5L / ASTMA106, etc
Material
Gr.B, X42-X70, St35-St52,etc
Product Category
Matallurgy, Mineral & Energy
Technique
Welded
Packing
In bundles or according to customers’request
Usage
1. For low pressure liquid delivery such as water, gas and oil
2. For construction, e.g building greenhouse
Main market
Middle east, Africa, North and South America, East and West Europe,
South and southeast Asia, Australis
HS code
73063090
Productivity
12000ton/month
Processing technology available
Threading, coupling and with plastic caps protected
Remarks
1)Payment term: T/T
2)Trade Term: FOB/CFR/CIF
3)Minimum quantity of order: 10 MT
4)Delivery period: 10 to 30 Days
Chemical Composition
Grade Level
Steel Grade
C≤
Mn≤
P≤
S≤
PSL1
A25
0.21
0.60
0.030
0.030
A
0.22
0.90
0.030
0.030
B
0.28
1.20
0.030
0.030
X42
0.28
1.30
0.030
0.030
X46,X52,X56
0.28
1.40
0.030
0.030
X60,X65,X70
0.28
1.40
0.030
0.030
PSL2
B
0.24
1.20
0.025
0.015
X42
0.24
1.30
0.025
0.015
X46,X52,X56
0.24
1.40
0.025
0.015
X60,X65,X70,X80
0.24
1.40
0.025
0.015
Electric resistance welding (ERW) refers to a group of welding processes such as spot and seam welding that produce coalescence of faying surfaceswhere heat to form the weld is generated by the electrical resistance of material combined with the time and the force used to hold the materials together during welding. Some factors influencing heat or welding temperatures are the proportions of the workpieces, the metal coating or the lack of coating, the electrode materials, electrode geometry, electrode pressing force, electrical current and length of welding time. Small pools of molten metal are formed at the point of most electrical resistance (the connecting or "faying" surfaces) as an electrical current (100–100,000 A) is passed through the metal. In general, resistance welding methods are efficient and cause little pollution, but their applications are limited to relatively thin materials and the equipment cost can be high (although in production situations the cost per weld may be low).
Edit by Ms. Vicky of CSPG
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