12Cr1MoVG

12Cr1MoVG is one of the steel grades that application seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines accord to standard GB 5310-2008.

Grade

Standard

Yield strength MAp

Tensile strength MAp

Elongation %

12Cr1MoVG

GB5130

0.08-0.15

0.17-0.37

0.40-0.70

0.15-0.30

0.25-0.35

0.90-1.2

≤0.03

255

470-640

A335 P22

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P22 Chemical Compositions(%)

Compositions	Data
UNS Designa-tion	K21590
Carbon	0.05-0.15
Manganese	0.30-0.60
Phosphorus(max.)	0.025
Sulfur(max.)	0.025
Silicon	0.50-1.00
Nickel	…
Chromium	1.90-2.60
Molybdenum	0.87-1.13
Other Elements	…

Mechanical properties for ASTM A335 P22

Properties	Data
Tensile strength, min, (MPa)	415 Mpa
Yield strength, min, (MPa)	205 Mpa
Elongation, min, (%), L/T	30/20

(Note: This is summarized information from ASME Specification A335. Please refer to the specific Standard or Specification or contact us for more details.)

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment

A / N+T
N+T / Q+T
N+T

Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Hardness Test:

P11 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

Notes for Bend Test:

For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

A335 P11

ASTM A335 P11 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.

The steel material shall conform to chemical composition, tensile property, and hardness requirements.

A335 P9

ASTM A335 P9 Alloy steel pipe apply to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant.

ASTM A335 P9 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.

The range of ASTM A335 P9 alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Outer Dimensions: 19.05mm – 114.3mm
Wall Thickness: 2.0mm – 14 mm
Length: max 16000mm

Steel grade: ASTM A335 P9 alloy steel pipe

Packing of ASTM A335 P9 alloy steel pipe:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test of ASTM A335 P9 alloy steel pipe:

Surface treatment of ASTM A335 P9 alloy steel pipe:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P9 alloy steel pipe alloy steel pipe Chemical Compositions(%)

Compositions	Data
UNS Designa-tion	K41545
Carbon(max.)	0.15
Manganese	0.30-0.60
Phosphorus(max.)	0.025
Silicon(max.)	0.50
Chromium	4.00-6.00
Molybdenum	0.45-0.65
Other Elements	…

Mechanical properties for ASTM A335 P9 alloy steel pipe

Properties	Data
Tensile strength, min, (MPa)	415 Mpa
Yield strength, min, (MPa)	205 Mpa
Elongation, min, (%), L/T	30/20

Material & Manufacture of ASTM A335 P9 alloy steel pipe

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment of ASTM A335 P9 alloy steel pipe

A / N+T
N+T / Q+T
N+T

Mechanical Tests Specified of ASTM A335 P9 alloy steel pipe

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Bend Test of ASTM A335 P9 alloy steel pipe:

For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

A335 P5

The range of ASTM A335 P5 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

Chemical Requirements of ASTM A335 P5

UNS Designa-tion	K41545
Carbon(max)	0.15
Manganese	0.30-0.60
P&S(max)	0.025
Silicon(max)	0.50
Chromium	4.00-6.00
Molybdenum	0.45-0.65
Others	—

Mechanical Properties of ASTM A335 P5

Tensile strength, min, (MPa)	415
Yield strength, min, (MPa)	205
Elongation, min, (%), L/T	30/20

20G

Grade 20G Seamless Steel Boiler Pipe is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines.

20G seamless steel pipe is a high-quality carbon structural steel, boiler material, the carbon content of 0.17-0.24%, tensile strength of 410Mpa, yield point 230-250Mpa. Is our main production of steel, we can provide 20G Seamless pipe with high quality and competitive price. Here to introduce you to our 20G seamless pipe basic chemical properties and mechanical properties.

Chemical Compositions(%) of GB5310 20G：

Chemical elements	Data
Carbon	0.17-0.24
Silicon	0.17-0.37
Manganese	0.70-1.00
Phosphorus(max)	0.03
Sulfur(max)	0.03
Chromium(max)	0.25
Molybdenum(max)	0.15
Cuprum(max)	0.2
Nickel(max)	0.25
Vanadium(max)	0.08

Mechanical Properties of GB5310 20G：

Properties	Data
Yield Strength (Mpa)	≥415
Tensile Strength (Mpa)	240
Elongation (%)	22

The W.T. tolerance of GB5310 20G：

W.T.(S)		Tolerance of W.T.
<3.5		+15%(+0.48mm min)
		-10%(+0.32mm min)
3.5-20		+15%,-10%
>20	D<219	±10%
	D≥219	+12.5%,-10%

Additional Condition

UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

GB5310 20G boiler steel pipe Application

GB5310 20G seamless steel pipes are mainly used for pressure vessels, machinery, pipe fittings, oil and chemical industry.

GB5310 20G boiler steel pipe Other Name

GB5310 20G boiler steel pipe, 20G boiler steel pipe, 20G boiler pipe

Boiler tubing is used in these industries:

Steam Boilers
Power Generation
Fossil Fuel Plants
Electric Power Plants
Industrial Processing Plants
Cogeneration Facilities

Seamless steel pipe Q245R grade (equal to 20G)

20G seamless steel pipe is a high-quality carbon structural steel, boiler material, the carbon content of 0.17-0.24%, tensile strength of 410Mpa, yield point 230-250Mpa.

57mm cutting end

12mm wall thickness

57mm all

2mm out diameter

57mm length

Out diameter 42mm all

42mm all

57mm out diameter

57mm wall thickness

Wall thickness measurment

57mm out diameter

A335 P91

ASTM A335 P91 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

ASTM A335 P91 high pressure semaless boiler pipe, The range of ASTM A335 P91 seamless alloysteel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice. The range of ASTM A335 P91 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

Outer Dimensions: 19.05mm – 114.3mm
Wall Thickness: 2.0mm – 14 mm
Length: max 16000mm

Steel grade: ASTM A335 P91