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 or Cold Rolling, On line inspection
5. Heat Treatment
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
GOST8733 / GOST8734 Structural Seamless Cold Formed Steel Pipe
10, 20, 35, 45, 10Mn2, 15Cr5Mo, 12Cr8, 20Cr, 40Cr
GOST8733 / GOST8734
OD: 6-114mm, WT: 1-20mm
Structural and mechanical purpose
Bao Steel, Xingcheng Steel, Zhongtian Steel
Seamless Steel Pipe
TS16949, ISO 9001
Bundles or Woodern Boxes
Tensile strength, N/mm2 (min)
Yield strength, N/mm2 (min)
Elongation, % (min)
Hardness HB (≤)
1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality. You need to in charge of Express costs.
2. How about your production capacity?
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.
5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade 3). Tube Size and Size Tolerance
4). Tube length 5). Quantity 6). If any special requirements
6. How about the minimum order quantity?
Normally for one size above 1 ton.