ST42 Q235 SS400B S235JR Annealing Surface Cold Drawn Seamless Steel Pipe For Mechanical Structure
Standards: DIN1626
Material Grade: 20# ST42 (Q235) SS400B S235JR
Size(mm):
ID :16MM-219MM
WT:2.5MM-40MM
Cold Drawn Steel Pipe is a steel pipe without seams on the surface of the entire steel pipe produced by drawing, extrusion, perforation, etc. It is a round, square and rectangular steel with a hollow section and no joints around it. It is made of steel ingots or solid tube blanks through perforation to make capillaries, and then cold drawn.
Delivery Conditions
BK(+A): After the final cold drawing process the tubes are annealed in a controlled atmosphere.
Size Deviation
| Deviation level | Standardized Outer Diameter Tolerance |
| D1 | ±1.5%. Minimum±0.75 mm |
| D2 | ±1.0%. Minimum±0.50 mm |
| D3 | ±0.75%. Minimum±0.30 mm |
| D4 | ±0.50%. Minimum±0.10 mm |
Mechanical Propety:
Material: ST42,Q235,S235JR,SS400B
STANDARD: DIN1626
| Delivery condition | Cold Finished(hard)(BK) | Cold Drawn and Stress Relieved(BK+A) |
| STEEL GRADE | Rm MPa | Elongation (%) | Rm MPa | ReH MPa | Elongation (%) |
| Q235 | ≥550 | ≥ 8 | ≥ 520 | ≥ 375 | ≥ 15 |
Production Process
Different processing methods and corresponding auxiliary procedures are selected according to the processing performance of the metal, the size of the pipe, the quality requirements, and the investment and benefits. The basic processes of cold-rolled and cold-drawn pipes are:
(1) pipe material supply, the pipe materials used are hot-rolled finished pipes or semi-finished pipes, extruded pipes and welded pipes;
(2) pipe material preparation, including inspection, bundling, acid Washing, cleaning, rinsing, neutralizing, drying, lubricating, etc.;
(3) Cold working (cold rolling or cold drawing);
(4) Finishing of finished products includes heat treatment of finished products, straightening, sampling, cutting heads and tails, inspection ( Manual inspection and various flaw detection), hydraulic test, oiling, packaging, storage, etc. Different products have different finishing contents.
Packing & Delivery
1. Packing: Seamless Steel Pipe will packing in bundles/in bulk/in plastic packing.
2. Trade terms:FOB/CFR/CIF
3. Shipping port:Qingdao,Shandong
4. Shipment:
1) Small diameter: Weight >Measurement
a. Length: ≤5.8m, loaded in 20FT Container, Max 27-28tons
b. Length: ≤11.8m, loaded in 40 FT Container, Max 27-28tons
c. Length: ≥12m, shipped by bulk vessel. FILO terms
2) Big dimater: Weight a. Size of 20 FT Container(inside :5898*2352*2350mm)(12024*2352*2395mm)
5.Delivery time: Normal size: 7days send from warehouse directly. Special size: 25-30days custom made for you.
Our Company
16MM-219MM
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ST42 Q235 Cold Drawn Seamless Steel Pipe SS400B S235JR Annealing Surface For Mechanical Structure Images
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