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Structural Steel Heat Treatment Technology
Structural steel workpiece in the heating and cooling process, due to inconsistencies cooling rate of the surface layer and the core section and time form a temperature difference, it will lead to volume expansion and contraction of the uneven stress that the heat stress. In the thermal stress du...Read more -
The Main Method of Straight Welded Steel Pipe
Forged: forging hammer use reciprocating impact force or press pressure so we need to change the blank shape and size of a pressure processing method. Extrusion: steel metal is placed in closed extrusion Jane, put pressure on one end of the metal from the die orifice to obtain a predetermined ext...Read more -
The Main Production Process of High-pressure Pipe
The main production process of high-pressure pipe: billet heating, perforated tube, pipe extension. High-pressure pipe rolling, pipe sizing and reducing, finishing and cooling pipe or the manufacturing method can be said Billet heating perforation heat tie pickling cold drawn carbon burning cutti...Read more -
Large-caliber Straight Seam Steel Pipe Production Process
1. Before molding work Raw materials that strip, wire, flux. We must go through rigorous physical and chemical testing before it is put. Strip head and tail docking, single or double wire submerged arc welding, in rolled steel by automatic submerged arc welding. 2. The molding process Electric co...Read more -
Continuous Rolling Production Process
Continuous rolling tube (hereinafter referred to as MPM) process is a mandrel refers to wear long capillary column continuously through a series arrangement rack, rolling and rolling method conforms to become rolling mother pipe size requirements. Its distinguishing feature is the large capacity,...Read more -
Features of Hot-rolled Seamless Tube
After hot-rolled seamless steel tubes, the grain refinement of steel, the ingot destroy the cast structure, eliminate defects and microstructure of the resulting dense PIPE, improved mechanical properties. Air bubbles present before the steel pipe, cracks and loose, after hot rolling at high temp...Read more -
Features Of Hot-Rolled Seamless Tube
After hot-rolled seamless steel tubes, the grain refinement of steel, the ingot destroy the cast structure, eliminate defects and microstructure of the resulting dense PIPE, improved mechanical properties. Air bubbles present before the steel pipe, cracks and loose, after hot rolling at high temp...Read more -
The Main Features of Precision Bright Tubes
Main features of precision bright tubes : Pipe with wall precision, high-quality finish, non-heat-treated steel oxide layer, the inner wall of high cleanliness steel to withstand high pressure, cold deformation, flaring, flattening no cracks, can make a variety of complex deformation and mechanic...Read more -
Embrittlement of Precision Steel Pipe
Brittle tempering temperature range based on precision tubes can be divided into low and high temperature temper brittleness temper brittleness. After tempering brittleness precision tube alloy steel quenched martensite at a temperature range of 250 ~ 400 ℃ tempered steel embrittlement which a br...Read more -
Applications Category of Finishing Seamless Steel Tubes
Finishing seamless steel tubes extensive assortment of applications: classification of finishing seamless steel pipe is widely applied: 1, Finishing with seamless steel structure seamless steel tubes for general structural and mechanical structure. 2, Transmission fluid with seamless steel pipe f...Read more -
The application of steel pipe in shipment and ocean Engineering
Ocean engineering steel pipe design and the selection, specification is according to the classification of ocean engineering steel structure, and with reference to the API (American petroleum institute), AISC (American society for steel structure), ASTM (American society of testing and materials)...Read more -
Heating defect of seamless tube billet
The production of hot-rolled seamless tube generally requires two heatings from the billet to the finished steel pipe, that is, the heating of the billet before piercing and the reheating of the blank pipe after rolling before sizing. When producing cold-rolled steel tubes, it is necessary to use...Read more
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