34CrMo4 37Mn 35CrMo 40Cr Alloy Seamless High-Pressure Gas Cylinder Steel Pipe

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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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Innovation, excellent and reliability are the core values of our business. These principles today extra than ever form the basis of our success as an internationally active mid-size company for 34CrMo4 37Mn 35CrMo 40Cr Alloy Seamless High-Pressure Gas Cylinder Steel Pipe, Welcoming fascinated organizations to cooperate with us, we glance ahead to possessing the opportunity of working with companies round the earth for joint development and mutual results.
Innovation, excellent and reliability are the core values of our business. These principles today extra than ever form the basis of our success as an internationally active mid-size company for China 34CrMo4 Steel Pipe and Seamless Steel Pipes, Our company offers the full range from pre-sales to after-sales service, from product development to audit the use of maintenance, based on strong technical strength, superior product performance, reasonable prices and perfect service, we are going to continue to develop, to supply the high-quality merchandise and services, and promote lasting cooperation with our customers, common development and create a better future.
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.Innovation, excellent and reliability are the core values of our business. These principles today extra than ever form the basis of our success as an internationally active mid-size company for factory low price 34CrMo4 37mn 34mn2V 35CrMo 40cr Alloy Seamless High-Pressure Gas Cylinder Steel Pipe, Welcoming fascinated organizations to cooperate with us, we glance ahead to possessing the opportunity of working with companies round the earth for joint development and mutual results.
factory low price China 34CrMo4 Steel Pipe and Seamless Steel Pipes, Our company offers the full range from pre-sales to after-sales service, from product development to audit the use of maintenance, based on strong technical strength, superior product performance, reasonable prices and perfect service, we are going to continue to develop, to supply the high-quality merchandise and services, and promote lasting cooperation with our customers, common development and create a better future.
If have any inquiry about 35CrMo /34CrMo4 alloy seamless steel pipe ,please kindly send me details to email:bruce@haihuisteel.com or 0086-15865769231(whatsapp),we would like to provide our best price as soon as possible.We also can provide steel pipe cutting service according to your demands.
Welcome to visit our company ,Hope to cooperate with your esteemed company !


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