What is 34crmo4 seamless steel tube used for？
34CrMo4 seamless steel tube is an alloy structural steel with high endurance and creep strength at high temperatures. It’s mainly used for cylinder manufacturing or structural parts working under high loads such as transmission parts of vehicles and engines; turbine-generator rotor, spindle, heavy load drive shaft, large section parts, locomotive traction gear, supercharger transmission gear, rear shaft, connecting rod and spring clamp with great load, can also be used for the oil drilling pipe joints and fishing tools below 2000m. However, its poor weldability requires preheating before welding, heat treatment after welding and stress elimination. It is generally used after quenching and tempering, and used after high and medium frequency surface quenching or quenching and low and medium temperature tempering.
34CrMo4 Steel gas cylinders are manufacturing special steel cylinders. Requirements are usually smaller carbon content, strictly control the sulphur and phosphorus contents, meet the strength at the same time, good toughness and impact energy. 100% non-destructive testing.
Standards: GB18248 – 2000
OD: Φ50-325mm; wall thickness: 3-55mm;
OD tolerance: ±0.75%;
Wall margin: -10%—+12.5%
Transverse slope: ≤2mm;
Straightness: 1mm/1m;
Inside diameter roundness: no more than 80% of the OD diameter tolerance
Surface quality: without crack, folding, delamination and stammer
Product Categories: Seamless steel tubes for high pressure vessels
Usages: For all kinds of fuel, hydraulic, trailer, station with gas bottle
Steel Grade: 34CrMo4、 34CrMo 、30CrMo、34Mn2V、35CrMo、40CrMo 、 42Crmo 、 42Crmo4 、 37Mn、16Mn Surface
Process： cold drawn/cold rolled/Hot drawn/Hot rolled