• Model NO.：KM-244
• Size：Outside Diameter 10-194mm, Thickness 1-20mm
• Delivery Time：20-35 Days Ex Mill
• Sample：Can Be Provided
• Testing Way：The Third Party Test Acceptable
• Material Grade：34CrMo4
• Surface：Oiled or Black Painted
• Loading Port：Chinese Main Port
• MOQ：5tons , Each Size
• Transport Package：in Bundles or According to Customers′ Request
• Specification：ISO
• Trademark：kingmetal
• Origin：China
• Production Capacity：20000ton,Month

EN10297-1 34CRMO4 GAS CYLINDER TUBE

34CrMo4 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. 

 

Outer diameter:89mm-368mm

Wall thickness:4-18 mm

length:5.8-12m

 

Straightness: Deviation 2 mm/m max.

Delivery allowance: +/- 10%

 

Technical Specification

 

 

Corresponding standards:

 

C

Si

Mn

P

S

Cr

Mo

0.30~0.37

0.10~0.40

0.60~0.90

≤0.035

≤0.035

0.90~1.20

0.15~0.30

 

Mechanical Values :

Grade

Tensile strength Rm

Yield strength YS

Elongation A(%)

34CrMo4

≥985(100)

≥835(85)

≥12

 

 

UT protocol according to ISO 10893-10

Non-destructive control: flux leakage acc. To EN 10246-4

Internal transversal defects- level severity F3

External transversal defects- level severity F2

flux leakage acc. To EN 10246-5

Internal longitudinal defects: level severity F3

External longitudinal defects: level severity F2

Sizes control: US-wall thickness measurement acc. To EN 10246-13

Mechanical tests will be done on samples at simulated heat treatment

conditions oil quenching at 880°C /30 minutes and tempering at 650°C /30 minutes.

Mill Test Certificate: EN 10204 3.1

Inspection: Bureau Veritas Acceptable

Packing: In bundles 2.5MT max, pipe ends with protection caps

Protection: No outside/inside coating, protecting material required

 

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