square tube
|
Product name
|
square pipe
|
|
Welding line type
|
ERW
|
|
Minimum order quantity
|
25 ton
|
|
Price
|
FOB USD 400-750/Ton
|
|
Port
|
Tianjin
|
|
Delivery time
|
About 7-30 days after receive the L/C or deposit
|
|
Payment terms
|
L/C, T/T
|
|
Supply ability
|
10000 Unit/Units per year 400MT/day
|
|
specification
|
20*20-600*600
|
|
WT
|
0.8mm-6.0mm
|
|
Standard
|
GB/T9711.1997,BS1387,ASTM A182-2001
|
|
Length
|
5m-12m
|
|
Usage
|
line pipe, casing and tubing, fluid pipe, water delivery, heating pipe, power pipe,
structure pipe, scaffold, piling pipe
|
|
Manufacture processes
|
Raw material Test-Uncoiling-Strip leveling-End Cutting-End Shearing and
welding-Accumlator-Forming-Telepathy Welding-Seam Heat Treatment-Air/
Water Cooling-Body/Seam UT-Sizing Straightening-Cutting-Visual and
dimension Inspection-Hydraulic Test-End Beveling-Flatten Test-Seam/End
UT-Length Measuring and Weighing-Coating Marketing-Storage
|
|
Raw material test
|
tensile test, yeild strength, elogation, impact test, chemical analysis,hardness test,
charpy impact test,metallographic examination
|
|
Final product test
|
hydraulic test,on-line and off- line ultrasonic test, tensile test,yeild strength,
elogation hardness test,charpy impact,flattening test chemcial analysis,
metallographic examination
|
|
Package
|
1.naked
2.bundles
3.according to the customers' requirement
|