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EN10216-3 Seamless Steel Tube For Pressure Purposes Technical Delivery Conditions Steels are fully killed made to fine grain. The tubes are manufactured by a seamless process Option 1: The tubes shall be cold finished before heat treatment Forming operation and delivery condition Forming operation Heat treatment condition Symbol for delivery condition Hot finished Normalised +N Hot finished Quenched and tempered +QT Hot finished + cold finished Normalised +N Hot finished +

A333/A333M Gr1 , Gr2 , Gr3, Gr4, Gr 5, Gr6 Seamless and Welded Steel Pipe for Low-Temperature Service A333/A333M Seamless and Welded Steel Pipe for Low-Temperature Service Material: Carbon and Alloy Steel, ferritic steel Grade 1A, Grade3, Grade 4, Grade 6A, Grade 7A Manufacture: The pipes are made by seamless and welding process with the addition of no filler metal in the welding operation. Grade 4 is manufactured by seamless process Heat treatment: All seamless and welded

BS6323-1 Seamless Steel Tubes - Welded Steel Tubes Applications: for Auto Industry / for Machinery Use/Mechanical and General Engineering Purposes Size range: O.D.:6-350mm W.T.:1-50mm L:max12000mm Steel Grade and Chemical Compositions: chemical element Mn P S Cr Mo steel grade max max max 　 　 HFW2 0.7 0.05 0.05 　 　 HFW3 0.9 0.05 0.05 　 　 HFW4 1.2 0.05 0.05 　 　 HFW5 1.5 0.05 0.05 　 　 HFS3 0.9 0.05 0.05 　 　 HFS4 1.2 0.05 0.05 　 　 HFS5 1.5 0.05 0.05 　 　 HFS8 0.5-0.9 0.05 0.05 　

ASTM A519 1010 1020 1026 4130 4140 Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing Applications: for machinery, mechanical engineer Size range: O.D.:6-350mm W.T.:1-50mm L:max12000mm Special Smoothness Inside Surface,SSIS this tubing is intended for use where the inside surface is of prime importance. Usually we leave maching allowance for both OD and ID tolerance for further maching purpose. Method of tube forming:

BS6323-4 BK BKW GBK NBK GZF NZF Cold Finished Seamless Steel Tubes Grade CFS1 CFS2 CFS3 CFS4 CFS5 42CrMo4 Standard: BS6323-4 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposes Part 4: Specific requirements for cold finished seamless steel tubes Applications: for Auto industry / for machinery use/mechanical and general engineering purposes Size range: O.D.:6-280mm W.T.:1-30mm L:max12000mm Method of manufacture: The tubes are manufactured

DIN2391 St35.0 St37.0 St44.0 St45St52.0 BKW BKS GBK NBK Seamless Precision Cold Drawn Steel Tubes Standard: DIN2391 Seamless Cold Drawn/Rolling Steel Tubes Applications: for Auto industry / for machinery use / Oil Cylinder Tube / Motorcycle shock absorber Auto shock absorber inner cylinder / Telescopic Cylinders Size range: O.D.:6-350mm W.T.:1-50mm L:max12000mm Materials: The tubes are manufactured from electric steel or basic oxygen stel, the melting and casting processes

EN10305-4 E215 E235 E355 Hydraulic and Pneumatic Seamless Cold Drawn Tubes Standard: EN10305-4 Seamless Cold Drawn Tubes for Hydraulic and Pneumatic Systems Steel tubes for precision applications.Technical delivery conditions Applications: for hydraulic and pneumatic power systems Size range: O.D.:6-80mm W.T.:0.5-12.5mm L: max12000mm Manufacturing Process: Steelmaking process: The steelmaking process is at the discretion of the manufacturer Steels are fully killed. Tube

SAE J524 Seamless Low Carbon Seamless Steel Tube Annealed for Bending / Flaring Standard: SAE J524 Seamless Low Carbon Steel Tubing Annealed for Bending and Flaring Applications: for Bending and Flaring to auto parts Size range: O.D.:6-88.9mm W.T.:1-15mm L: According to customer Order Table 1- TUBING OUTSIDE DIAMETER TOLERANCE Nominal Tubing OD mm Tolerance ±mm Up to 25.4 0.10 Over 25.4 to 38.1 inclusive 0.15 Over 38.1 to 50.8 inclusive 0.20 Over 50.8 to 88.9 inclusive 0.25

Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37 Production Process: Cold rolling by Cold pilger machine and Cold rolling machine,galvanized and zinc plated could be applied. Cold Rolled and Galvanized Steel Tube Production process: DIN highly accurate, cold rolled and bright seamless steel tube is used as the tube to be galvanized. The outer wall of tube is electroplated. The caps are covered at two ends of tube to prevent from the dust. Main Features: