Seamless Precision Steels Tubes DIN2391

Product Details

Short Description:

Product material:

St35/St45/St52

Product applied standard:

DIN 2391

Finished products package:

Steel belt hexagonal package/plastic film/woven bag/sling package

Product manufacturing process:

Tube blank → Inspection (spectral detection, surface inspection, and dimensional inspection) → Sawing → Perforation → Thermal inspection → Pickling → Grinding inspection → Lubrication → Cold drawing → Lubrication → Cold-drawing (the addition of cycled processes such as heat treatment, pickling and cold drawing should be subject to the specific specifications) → Cold drawing/hard BK or cold drawing/soft BKW or cold drawing and stress relieved BKS or annealing GBK or normalization NBK (selected according to customer’s needs) → Performance test (mechanical property, impact property, flattening, and flaring) → Straightening → Tube cutting → Non-destructive testing → Hydrostatic test → Product inspection → Immersion of anti-corrosive oil → Packaging → Warehousing

Product manufacturing equipment:

Shearing machine/sawing machine, walking beam furnace, perforator, high-precision cold-drawing machine, heat-treated furnace, and straightening machine

Product testing equipment:

Outside micrometer, tube micrometer, dial bore gage, vernier caliper, chemical composition detector, spectral detector, tensile testing machine, Rockwell hardness tester, impact testing machine, eddy current flaw detector, ultrasonic flaw detector, and hydrostatic testing machine

Product applications:

Chemical equipment, ships, pipelines, automotive parts, and mechanical design applications