Best-Selling 34CrMo4 Alloy Seamless Steel Pipe High-Pressure Gas Cylinder Steel Tube

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34CrMo4/35CrMo  has high endurance strength and creep strength at high temperature, good impact toughness at low temperature, good hardenability, no overheating tendency, small quenching deformation, acceptable plasticity at cold edge forming and medium processability. Poor weldability, preheating before welding, post welding heat treatment and stress relief are generally used after quenching and tempering, and can also be used after high and medium frequency surface quenching or quenching and low and medium temperature tempering.


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We have our own sales team, design team, technical team, QC team and package team. We have strict quality control procedures for each process. Also, all of our workers are experienced in printing field for Best-Selling 34CrMo4 Alloy Seamless Steel Pipe High-Pressure Gas Cylinder Steel Tube, Trust us and you will gain a lot more. You should truly feel totally free to make contact with us for additional data, we assure you of our greatest notice at all times.
We have our own sales team, design team, technical team, QC team and package team. We have strict quality control procedures for each process. Also, all of our workers are experienced in printing field for China 34CrMo4 Alloy Seamless Steel Pipe, we have been fully determined to control the whole supply chain so as to deliver quality solutions at competitive price in a timely manner. We’ve been keeping up with the advanced techniques, growing through creating more values for our clients and society.
34CrMo4 / 35CrMo is used as important structural parts working under high load, such as transmission parts of vehicles and engines; The rotor, main shaft and transmission shaft with heavy load of turbo generator, the large section part 34CrMo4 is used to manufacture forgings with higher strength and larger quenching and tempering section than 35CrMo steel, such as large gear for locomotive traction, booster transmission gear, rear shaft, connecting rod and spring clamp with great load. 34CrMo4 can also be used for drill pipe joints and fishing tools in oil deep wells below 2000m.34CrMo4 Gas Cylinder Pipe, mainly used in automobile gas cylinder installation, fire protection, medical fields, industry equipment, etc.

The carbon equivalent value CEQ of 35CrMo steel is 0.72%. It can be seen that the weldability of this material is poor, and its hard tendency is large during welding. The hot crack and cold crack tendency of the heat affected zone of 35CrMo alloy pipe will be large. Especially when welding in the quenched and tempered state, the cold crack tendency of the heat affected zone will be very prominent. Therefore, on the basis of selecting appropriate welding materials and reasonable welding methods, higher pre welding preheating temperature Under the condition of strict process measures and proper interpass temperature control, the purpose of product welding can be achieved.

Pipe For Gas Cylinder Pipe8
Pipe For Gas Cylinder Pipe7
Pipe For Gas Cylinder Pipe4

-EN 10297-1 Seamless Circular Steel Tubes for Mechanical and General Engineering Purpose.

-GB/T 8162 Seamless Steel Tubes for Structural Purposes.

Steel Grade C Si Mn  P S Cr Mo
34CrMo4 0.30-0.37 0.40 max 0.60-0.90 0.035 max  0.035 max 0.90-1.20 0.15-0.30
Steel Grade C Si Mn  P S Cr Mo
35CrMo 0.32-0.40 0.17-0.37 0.40-0.70 0.035 max  0.035 max 0.80-1.10 0.15-0.25

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、30CrMo、34Mn2V、35CrMo、37Mn、16Mn.We have our own sales team, design team, technical team, QC team and package team. We have strict quality control procedures for each process.
Best-Selling 34CrMo4 Alloy Seamless Steel Pipe High-Pressure Gas Cylinder Steel Tube
Trust us and you will gain a lot more. You should truly feel totally free to make contact with us for additional data, we assure you of our greatest notice at all times.
China 34CrMo4 Alloy Seamless Steel Pipe
We have been fully determined to control the whole supply chain so as to deliver quality solutions at competitive price in a timely manner. We’ve been keeping up with the advanced techniques, growing through creating more values for our clients and society.


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