Some people call cold drawn seamless pipe as cold drawn seamless, while, according to its basic material, it has different names. If it is made of carbon steel, call it cold drawn seamless carbon steel. If stainless, it is cold drawn seamless stainless tube.
But, we often regard it including seamless tube, high, medium and low pressure boiler tube, alloy-steel tube, anti-rust pipe and petroleum cracking pipe. Besides above classification, we also categorize cold drawn seamless steel tube by carbon thin wall steel tube, alloy thin wall pipe, stainless thin-wall thickness tube and more, thickness available, SCH 20, SCH 30, SCH40, SCH80, and SCH160.
Cold drawn seamless tube is widely application for the mechanical structure and hydraulic device which request high precision accuracy since cold drawn seamless steel tube offers better surface quality, external appearance, and size precision than the hot rolled product.
GK Production Processes
Roll the steel plate → heating → perforating → heading →annealing → acid washing→ oiling (copper plating) → cold drawing in multiple passes→ semi-finished pipe → heat treatment →straightening → water pressure test or flaw detection → marking → warehousing.
1, Sizes: 1/4”~4” (21.3~114.3mm)
2, Wall Thickness: 2.24~13.49mm
3, Standard: API5L, DIN ASTM A106 ASTM A179 GB/T8162 8163 3087 etc
4, Steel Grade: GR.A, GR.B, X42, X46, X52 ST44 ST52
1.Chemical composition, process performance, mechanics performance, size tolerance, Delivery status, water pressure and flaw detection.
2.Composition and Mechanical properties of commonly used carbon steel alloy steel.
2. Seemless steel pipe, welded pipe, etc.
3. A series international universal series, domestic series.