The Chinese grade of 4130 chromium molybdenum steel is 30CrMo.So 30 is carbon.J857Cr electrode can be used for welding.For industrial pressure pipe, chromium molybdenum steel welding materials, according to the steel Cr, Mo content can choose different electrode, wire.
If steel number: 12CrMo(0.5 cr-0.5 Mo), can choose R207 electrode.Wire TIG - R30
15CrMo(1cr-0.5 Mo), choose R307 electrode, wire tig-r30
12CrMoV(1 cr-0.5 mo-v), choose R317 electrode.Wire TIG - 31
12Cr2Mo(2.5 cr-0.5 Mo), choose R407 electrode, wire tig-40
1Cr5Mo(5cr-0.5 Mo), choose R507 electrode, wire tig-40
Cr9Mo(9cr-1mo), choose R707 electrode, wire tig-40 can be.
Ordinary seamless tube material: 10#, 20#, 35#, 45#, 16Mn(Q345B\Q345C\Q345D\Q345E)
Seamless alloy material: GCr15, 27SiMn, 15CrMoG, 12Cr1MoVG, 35CrMo, 42CrMo, Cr5Mo, Cr9Mo, A335P11, A335P22, A335P91, 10CrMo910
Material of imported alloy tube: 12Cr1MoV(G), 12CrMo44(A335P12, STFA2215CrMo), 10CrMo910(A335P22, 12Cr2Mo, STFA24), A33P5(SETA25, Cr5Mo), A335P9(Cr9Mo, STFA26), A335P91(T91), WB36(15NiCuMoNB5), steel research 102(12Cr2MoWVTiB).
Steel pipe implementation standard: GB/ t8162-2008, GB/ t8163-2008, gb3087-2008, gb5310-1995, gb6479-2006, gb9948-2000 JlSG3457, German din17175-79 American, Italian ASTM, ASME.
Material of rectangular tube: Q195 Q235 16Mn(Q345B\Q345C\Q345D\Q345E)
Alloy plate: 15CrMo 12Cr1MoV T91 P9 P11 P22 Q345B, etc
Stainless steel material: 321, 304, 304L, 316, 316L, etc
Pipeline material: L245 L290 L320 L360 L390 L415 L450 X42 X46 X52 X56 X60 X65 X70 X80, etc.
Bonded steel quality: 8#-60#, 15crmo-42crmo, 16mn-65mn, 38CrMoAL, 5CrMnMo, YF45V, 20CrMnTi, 30CrMnTi, GCr15, 20cr-50cr, etc.
According to customer demand, the company can order the production of 10-325mm*1-55mm seamless steel tubes of various materials, with an annual production capacity of up to 150,000 tons.You can process and customize hot-rolled seamless steel tubes, precision tubes, alloy tubes, cold-drawn tubes, etc. In order to ensure the production of products, the company is equipped with laboratories and purchased ultrasonic flaw detector, hydrostatic test machine and other product quality inspection equipment.
The company specializing in the production of 10-325 * 1-50 mm outside diameter seamless steel tube, high precision seamless steel tube cold rolling thin wall steel pipe, thick-walled seamless tube surface smooth bright and uniform wall thickness, high precision according to customer requirements to ensure the error in 0.1 mm - 0.05 mm, small diameter thin wall pipe within 0.05 mm - 0.03 mm, cold rolled precision steel tube, all kinds of material size diameter cold drawn seamless steel tube, guarantee the market.The e products are widely used in machinery, petroleum, chemical industry, especially hydraulic, motorcycle, automobile industry other steel tube precision, finish, mechanical performance has a high demand in the field.The main materials of steel pipe produced by our company are: carbon steel 10#, 20#, 35#, 45#, Q345B/C, 20G, 40Cr, 20Cr, 35CrMo, 27SiMn, 42CrMo, etc.Cold drawn or cold rolled precision seamless steel tube GB/ t3639-2000,GB/ t8713-1988 Chinese national standard, German standard DIN2391 bright precision seamless tube, precision tube used in the manufacture of mechanical structures, hydraulic equipment, hydraulic and pneumatic cylinder.