GB/T 18248 35CrMo seamless pipe for gas cylinders

GB/T 18248 35CrMo seamless pipe for gas cylinders

Standard: GB/T 18248

GB/T 18248 35CrMo steel pipe is a seamless alloy steel pipe for gas cylinders. The company has advanced technology and equipment and a strong technical force,and its seamless pipes production and inspection equipment are most up-to-date in domestic steel pipe industry.

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GB/T 18248 35CrMo steel pipe is a seamless alloy steel pipe for gas cylinders. The company has advanced technology and equipment and a strong technical force,and its seamless pipes production and inspection equipment are most up-to-date in domestic steel pipe industry.

GBT 18248 grades: 30CrMo, 35CrMo, 34CrMo4

35CrMo seamless pipes equivalent: 34CrMo4 in EN 10297-1:2003, STH22 in JIS G3429:2006.

35CrMo seamless pipe has high static strength, impact toughness and high fatigue limit. The harden ability is higher than 40Cr, higher creep strength and lasting strength under high temperature, long-term working temperature up to 500 ℃.

GBT 18248 35CrMo seamless pipe composition(%)

Grade

C

Si

Mn

P,S

P+S

Cu

Ni

Mo

Cr

35CrMo

0.32-0.40

0.17-0.37

0.40-0.70

≤0.020

≤0.030

≤0.20

≤0.30

0.15-0.25

0.80-1.10

GBT 18248 35CrMo steel pipe mechanical properties

Grade

Tensile strength [min, Mpa]

Yield strength [min, Mpa]

Elongation [%,min]

35CrMo

980

835

12

Outside Diameter & Wall Thickness Tolerance

Types

Pipe diameter, mm

Tolerance

Wall thick tolerance

Ordinary

High quality

Hot rolled pipe

D<339.7

±1%

+12.5%, -10%

±10%

Cold drawn pipe

D≥339.7

±1%

+15%, -12.5%

+12.5%, -10%

Cold drawn pipe

All

±0.75%

±10%

±7.5%

35CrMo seamless alloy steel pipe can be utilized to make significant parts in different machines that withstand effect, twisting and high loads, for example, moving factory gears, crankshafts, associating bars, clasp, car motor axles, axles, motor transmission parts, substantial engine shafts, screws for boilers with working temperatures beneath 400 ℃, nuts underneath 510 ℃, high weight consistent thick-walled conductors for compound apparatus.

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