Seamless Steel Pipe & Tube, Carbon Seamless Steel Pipe,SMLS Pipe & Tube, CS Seamless Pipe Black Seamless Pipe, GI Seamless Pipe

Seamless Steel Pipe & Tube, Carbon Seamless Steel Pipe,SMLS Pipe & Tube, CS Seamless Pipe Black Seamless Pipe, GI Seamless Pipe

Standard: GB3087-1999, ASTM A179, JIS G3454, ASTM A210, ASTM A192, ASTM A335, ASTM A333, ASTM A268, DIN 17175
Application: Used for manufacturing superheated pipelines, the steam pipe, boiling water tube, flue tube, small flue tube, etc.of low, mediam pressure boiler, the general industry boiler

Standard: GB/T8163-1999, ASTM A53-98, JIS G3452-1998, JIS G3454-1998, ASTM A106, DIN 1629-1984
Application: For conveying of petroleum, gas and other fluids

Standard: GB/T8162-1999, ASTM A53, ASTM A106, ASTM A500-98, ASTM A501-98, ASTM A519-98, JIS G3441-1994, JIS G3444-1994, BS EN 10210-1
Application: Used in the general structure and the mechanism, including construction, machinery, transportation, aviation, petroleum mining and each kind of structural tubes

The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F. After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed. The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system. The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system. After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.

Spiral welded pipe is the low carbon carbon structural steel or low alloy structural steel strip according to a certain helix Angle (called forming Angle) rolled into a tube blank, and then the pipe seam welded together, it can use a narrow strip steel to produce large diameter steel pipe.

SSAW steel pipe is the raw material of strip coil, often temperature extrusion molding, automatic double-wire double submerged arc welding process made of spiral seam pipe. Spiral steel pipe will strip into the pipe unit, the multi-roll rolling, strip rolled up, forming a circular gap opening gap, adjust the squeeze roll reduction, the weld gap control in the 1 ~ 3mm, and make both ends of the weld flush.