ASTM A691 Grade 1 14 CR Seamless Pipes

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ASTM A691 Grade 1 14 CR Seamless Pipes Specification

Application
Oil & Gas, Power Plants, Petrochemical, High-Pressure Applications

Tolerance
0.5%

Product Type
Seamless Pipe

Surface Finish
Polished

End Protector
Plastic Caps

Connection
Beveled, Plain Ends, Threaded

Material
ASTM A691 Grade 1 1/4 CR Alloy Steel

Section Shape
Round

Standard
ASTM A691

Technique
Seamless

Surface Treatment
Anti-corrosion Coating, Oiled

Alloy or Not
Alloy

Outer Diameter
21.34 mm 1016 mm

Thickness
2.77 mm 100 mm

Size
Custom sizes available upon request

Length
Single Random, Double Random, or as per Requirement (up to 12 meters)

About ASTM A691 Grade 1 14 CR Seamless Pipes

What Are Specification ASTM A691 Grade 1 1/4 CR Seamless Pipes?

Grade	Alloy Steel ASTM A691 Cl22, A691 GRADE 1 CR, GRADE 1/2 CR, GRADE 1 1/4 CR, GRADE 2 1/4 CR, GRADE 3 CR, GRADE 5 CR, GRADE 9 CR, GRADE 91, CM 65, CM 70, CM 75
Size	1/2 NB to 36 NB
Thickness	3-12mm
Schedules	SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Class Designation	Class 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 34, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73
ASTM A691 Grades	ASTM A691 Gr 11, ASTM A691 Gr.91, ASTM A691 9cr, ASTM A691 5cr, ASTM A691 1 1/4cr Cl22, ASTM A691m, ASTM A691 Gr.5cr Cl22, ASTM A691 Cm70, ASTM A691 Class 22, ASTM A691 Class 42, ASTM A691-91, ASTM A691 Grade 2.1/4cr, ASTM A691 11/4cr Cl22
Origin	European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
Tolerance	Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm
Craft	Cold rolled and Cold drawn
Type	Seamless / ERW / Welded / Fabricated / LSAW Pipes
available in Form of	Round, Square, Rectangular, Hydraulic Etc.
Length	Standard Double & In Cut length also.
End	Plain End, Beveled End, Treaded
Specialized in	Large Diameter ASTM A691 Pipe
Additional Testing	NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
Application	Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

Equivalent material Of ASTM A691 Grade 1 1/4 CR Seamless Pipes?

Pipe Grade	Type of Steel	ASTM Specification		HB, max
Pipe Grade	Type of Steel	Number	Grade	HB, max
CM-65	carbon-molybdenum steel	A204/A204M	A	201
CM-70	carbon-molybdenum steel	A204/A204M	B	201
CM-75	carbon-molybdenum steel	A204/A204M	C	201
CMSH-70	carbon-manganese-silicon steel, normalized	A537/A537M	1
CMS-75	carbon-manganese-silicon steel	A299/A299M
CMSH-80	carbon-manganese-silicon steel, quenched and tempered	A537/A537M	2
1/2 CR	1/2 % chromium, 1/2 % molybdenum steel	A387/A387M	2	201
1 CR	1 % chromium, 1/2 % molybdenum steel	A387/A387M	12	201
1 1/4 CR	1 1/4 % chromium, 1/2 % molybdenum steel	A387/A387M	11	201
2 1/4 CR	2 1/4 % chromium, 1 % molybdenum steel	A387/A387M	22	201
3 CR	3 % chromium, 1 % molybdenum steel	A387/A387M	21	201
5 CR	5 % chromium, 1/2 % molybdenum steel	A387/A387M	5	225
9 CR	9 % chromium, 1 % molybdenum steel	A387/A387M	9	241
91	9 % chromium, 1 % molybdenum, vanadium, columbium	A387/A387M	91	241

Chemical Composition Of ASTM A691 Grade 1 1/4 CR Seamless Pipes?

	1CR	1-1/4CR	2-1/4 CR	5 CR	9 CR	91
C	0.05-0.17	0.05-0.17	0.05-0.15	0.15	0.15	0.08-0.12
Mn	0.40-0.65	0.40-0.65	0.30-0.60	0.30-0.60	0.30-0.60	0.30-0.60
P	0.025	0.025	0.025	0.025	0.025	0.020
S	0.025	0.025	0.025	0.025	0.025	0.010
Si	0.15-0.40	0.50-0.80	0.50	0.50	1.00	0.20-0.50
Cr	0.80-1.15	1.00-1.50	2.00-2.50	4.00-6.00	8.00-10.00	8.00-9.50
Mo	0.45-0.60	0.45-0.65	0.90-1.10	0.45-0.65	0.90-1.10	0.85-1.05
V					0.04	0.18-0.25

Mechanical Properties Of ASTM A691 Grade 1 1/4 CR Seamless Pipes?

Class	Heat Treatment on Pipe Section see:	Radiography, see Section	Pressure Test, see :
10	none	none	none
11	none	9	none
12	none	9	8.3
13	none	none	8.3
21	stress relieved, see 6.3.1	none	none
21	stress relieved, see 6.3.1	9	none
ASTM A691 Class 22	stress relieved, see 6.3.1	9	8.3
23	stress relieved, see 6.3.1	none	8.3
31	normalized, see 6.3.2	none	none
31	normalized, see 6.3.2	9	none
32	normalized, see 6.3.2	9	8.3
33	normalized, see 6.3.2	none	8.3
40	normalized and tempered, see 6.3.3	none	none
43	normalized and tempered, see 6.3.3	9	none
43	normalized and tempered, see 6.3.3	9	8.3
43	normalized and tempered, see 6.3.3	none	8.3
50	quenched and tempered, see 6.3.4	none	none
51	quenched and tempered, see 6.3.4	9	none
52	quenched and tempered, see 6.3.4	9	8.3
53	quenched and tempered, see 6.3.4	none	8.3
60	normalized and precipitation heat none none treated	none	none
61	normalized and precipitation heat none none treated	9	none
62	normalized and precipitation heat none none treated	9	8.3
63	normalized and precipitation heat none none treated	none	8.3
70	normalized and precipitation heat none none treated	none	none
71	normalized and precipitation heat none none treated	9	none
72	normalized and precipitation heat none none treated	9	8.3
73	normalized and precipitation heat none none treated	none	8.3

Versatility in Heat Treatment and Surface Finish

ASTM A691 Grade 1 1/4 CR pipes benefit from heat treatments such as normalizing, tempering, and optional quenching, tailored for enhanced toughness and performance in high-pressure environments. The pipes are also available with polished surfaces and anti-corrosion or oiled finishes to ensure lasting protection in harsh operating conditions.

Comprehensive Testing and Certification Standards

Every pipe undergoes 100% hydrostatic testing and may be inspected using ultrasonic, eddy current, or magnetic particle techniques as required. The products are supplied with test certificates conforming to EN 10204/3.1B, and third-party inspections can be arranged for added assurance, meeting the rigorous standards expected in critical applications.

Flexible Sizing and Customization Options

Manufacturers export and supply ASTM A691 pipes in a range of outer diameters (21.34 mm to 1016 mm), thicknesses, and custom lengths up to 12 meters. Customers can specify end connections (beveled, plain, or threaded), protection methods, and packaging styles to suit project needs. Minimum order quantities are negotiable, allowing flexibility for diverse requirements.

FAQs of ASTM A691 Grade 1 14 CR Seamless Pipes:

Q: How can ASTM A691 Grade 1 1/4 CR seamless pipes be utilized in industry applications?

A: These pipes are well-suited for use in high-pressure pipelines and critical systems in sectors such as oil & gas, petrochemical plants, and power generation. Their robust alloy construction and reliable testing regime make them ideal for transporting fluids and gases under demanding conditions.

Q: What testing and inspection processes are applied to these seamless pipes?

A: Each pipe undergoes 100% hydrostatic testing to verify pressure integrity. Non-destructive testing methodsincluding ultrasonic, eddy current, and magnetic particle inspectionsare available on request. Third-party inspection can also be arranged to ensure compliance with project and client specifications.

Q: When should I request different pipe end types for my project requirements?

A: The selection between square cut, beveled, or plain ends depends on the installation method and the type of jointing required. Beveled ends are typically used for welding, while plain ends or square cuts can suit mechanical connections or threading, allowing flexibility based on project demands.

Q: Where are these ASTM A691 pipes exported and used?

A: These alloy steel pipes are produced in India and exported to various international markets. They are commonly installed in oil refineries, power plants, and petrochemical facilities around the globe, wherever high-performance alloy steel piping is required.

Q: What is the process for ordering custom sizes and finishes?

A: Customers can specify diameter, wall thickness, length (up to 12 meters), end type, surface treatment, and packaging. The manufacturer or supplier will review requirements, confirm feasibility, and offer negotiable minimum order quantities to accommodate both small and large projects.

Q: Which benefits do the anti-corrosion and oiled surface treatments provide?

A: These coatings protect the pipes against rust and surface degradation during storage, transport, and installation. This is particularly important for projects in coastal or harsh environments where corrosion resistance ensures a longer service life of the piping system.

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