GB/T 3091 Q195 Q215A/B Q235A/B Welded Steel Tube St33 Cr.B DIN S185 SS330
Welded Steel Pipes for Low Pressure Liquid Delivery GB/T 3091
Spec:
Material:Q195 Q215A/B Q235A/B Q295A/B Q345A/B equivalent to steel grade st33 Cr.B Cr.58 Cr.D
DIN S185 SS330 SS400 etc
Size Range:OD:3-420mm
WT:0.5-50mm
General Length:3-12m
Tolerance:
According to the following tables or customers’ request.
Characteristic:
Weight coefficient of galvanized coat
Processing: Steel pipe shall be processed eith anyone of longitudinal-seam high-frequency electrical resistance welding, longitudinal-seam submerged arc welding and spiral-seam submerged arc welding.
Technical Delivery Conditions:Steel pipes shall be delivered in welded state. Longitudinal-seam high-frequency electrical resistance welded steel pipe may be delivered in welded seam treatment conditon. According to requirement of demand side, and through negotiation between both supply and demand side, steel pipe also may be delivered in bulk heat treament state and that shall be indicated in contract.
Widely used in the field of:For water,gas,oil,air and heating steam transporting or other uses
Product Images:
Characteristic:
Good concentricity
Good surface quality
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
QUALITY CONTROL
1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
Mechanical property
FAQ
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, and it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but you need to pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance , balance before shippment.
If you have another question, pls feel free to contact us
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