Specifications and Grades about Seamless steel pipe

1/8" through 24" O.D. Specifications and Grades: •ASTM/ASME A/SA106 B/C •ASTM/ASME A/SA 53B •ASTM/ASME A/SA 333 Grade 6 •API 5L B, X42, X52, X60, X65 •NACE MR-0175 •EN 10204 3.1.B Steel Capabilities: •Industry Leader in High Yield Pipe •Product for Low Temperature Applications - A/SA 333; A106 with Charpys •50,000 Min Yield Pipe for Construction [...]

October 20th, 2017|

Cold-rolled steel surface quality

Cold drawn steel hot rolled coils as raw materials for cold rolling after pickling descaling, the finished product is rolling hard volumes, due to continuous cold work hardening caused by deformation of the strength of the rolling hard volumes, and increased hardness, toughness plastic index decreases. Accordingly stamping performance will deteriorate and can only be [...]

October 18th, 2017|

Carbon steel seamless pipe manufacturing annular parts

Carbon steel seamless pipe manufacturing annular parts, can improve material utilization, simplify the manufacturing process, saving time and material processing stations, such as bearing rings, jack sets, is currently widely used to make steel. Carbon steel seamless pipe or a variety of conventional weapons indispensable material, barrel, barrel would have to make steel. Pipe according [...]

October 17th, 2017|

Hot-rolled and cold drawn seamless steel tubes Process Overview

Cold drawn (rolled) seamless steel pipe: round tube perforation → heating → → → annealing → pickling → Heading oiled (copper) → multi-pass cold drawn (cold) → blank tube → heat treatment → straightening → water pressure test (testing) → mark → storage. Hot-rolled (extrusion seamless steel pipe): round tube perforation → → heating → [...]

October 16th, 2017|

High-pressure boiler seamless pipe

High-pressure boiler seamless pipe is a kind of Boiler Tube. It belongs to the category of seamless steel tubes. The method of manufacturing the same and seamless, but the manufacture of steel pipe used, there are strict requirements. Often in high temperature and high pressure conditions, the use of high-pressure seamless tube under the effect [...]

October 13th, 2017|

40Cr seamless steel pipe brief introduction normalizing and tempering process

Cr can increase the hardenability 40Cr seamless steel pipe, improve the strength and stability of tempered steel, with excellent mechanical properties. Large cross-sectional dimension or critical quenching 40Cr seamless, Cr steel should be used. But Cr steel has a second temper brittleness. 40Cr seamless steel pipe tempered quenching and tempering, various parameters have predetermined process [...]

October 12th, 2017|

20 seamless steel pipe production process technology need to pay attention

Sample Preparation: Sample processing tools to prevent pollution caused by the sample, the sample processing to avoid overheating so that the surface oxidation. Intact specimen surface finish should not have cracks, inclusions, blisters and other defects. Spectral line intensity and specimen geometry, size, active area and other light sources, although on the excitation current of [...]

October 11th, 2017|

How to control 16mn seamless hot-dip galvanizing time and temperature

From the historical test and production practices can be sure, 16mn seamless steel pipe hot-dip galvanized zinc liquid temperature to control the optimum temperature in the range of 450 ℃ ~ 460 ℃. When the temperature is high, heat consumption will increase, shortening the life of steel zinc pot, speed dross and zinc ash generation, [...]

October 10th, 2017|

Overview of seamless carbon steel pipe

Carbon steel seamless pipe is a hollow cross-section, no seams around the long bar of steel. Steel hollow section is used as a large number of pipes conveying fluids, such as transportation of oil, natural gas, gas, water and some solid materials, pipes and so on. And other carbon steel seamless pipe and solid steel [...]

October 9th, 2017|

Seamless steel pipe production line five common type cooling bed

Single chain cooling bed Single chain cooling bed multi-use climbing structure. Cooling bed by the forward and fixed rail transport chain composed of a set of transmission. Pipe placed between two grasping dial the forward transport chain, fixed rail to bear the weight of steel body. Single chain cooling bed transport chain use the forward [...]

September 30th, 2017|