ASTM A312 Stainless Steel Pipes

Grade: UNS S30600, S30601, S31254, S32053, S32615, S32654, S38815, N08020, N08028, N08029, N08367, N08800, N08810, N08811, N08904, N08925, N08926
Pipe OD: NPS 1/8″-48″ (10.3-1219.2mm)
Pipe WT: SCH 5S, 10S, 40S, 80S, XS, XXS
Length: 3000-12000mm
Type: Seamless and Welded

Features

ASTM A312/A312M Seamless, Welded, and Heavily Cold Worked Stainless Steel Pipes

Chemical Composition (wt.%)

UNS No.	Grade	C(%)	Mn(%)	P (%)	S(%)	Si(%)	Cr(%)	Ni(%)	Mo(%)	Others (%)
N08020	Alloy 20	0.07	2.00	0.045	0.035	1.00	19.0-21.0	32.0-38.0	2.0-3.0	–
N08028	Alloy 28	0.030	2.50	0.030	0.030	1.00	26.0-28.0	30.0-34.0	3.0-4.0	Cu 0.6-1.4
N08029	–	0.020	2.00	0.025	0.015	0.60	26.0-28.0	30.0-34.0	4.0-5.0	Cu 0.6-1.4
N08367	6% Mo	0.030	2.00	0.040	0.030	1.00	20.0-22.0	23.5-25.5	6.0-7.0	N 0.18-0.25
N08800	800	0.10	1.50	0.045	0.015	1.00	19.0-23.0	30.0-35.0	–	Al+Ti 0.15-0.60
N08810	800H	0.05-0.10	1.50	0.045	0.015	1.00	19.0-23.0	30.0-35.0	–	Al+Ti 0.15-0.60
N08811	800HT	0.06-0.10	1.50	0.045	0.015	1.00	19.0-23.0	30.0-35.0	–	Al+Ti 0.15-0.60
N08904	904L	0.020	2.00	0.040	0.030	1.00	19.0-23.0	23.0-28.0	4.0-5.0	Cu 1.0-2.0
N08925	–	0.020	1.50	0.045	0.030	0.50	19.0-21.0	24.0-26.0	6.0-7.0	N 0.1-0.25
N08926	6% Mo	0.020	2.00	0.030	0.010	0.50	19.0-21.0	24.0-26.0	6.0-7.0	N 0.15-0.25

UNS No.	Grade	C(%)	Mn(%)	P(%)	S(%)	Si(%)	Cr(%)	Ni(%)	Mo(%)	Ni(%)	Cu(%)
S30600	4% Si	0.030	2.00	0.045	0.030	1.00	17.0-19.0	14.0-16.0	1.0-3.0	0.10	–
S30601	5% Si	0.030	2.00	0.045	0.030	1.00	17.0-19.0	14.0-16.0	1.0-3.0	0.10	–
S31254	6% Mo, 254SMO	0.020	1.00	0.030	0.010	0.80	19.5-20.5	17.5-18.5	6.0-6.5	0.18-0.25	0.50-1.00
S32053		0.020	2.0-4.0	0.030	0.010	0.80	23.0-25.0	16.0-18.0	7.0-8.0	0.45-0.55	–
S32654	7% Mo, 654SMO	0.020	2.0-4.0	0.030	0.010	0.50	24.0-25.0	21.0-23.0	7.0-8.0	0.40-0.60	–
S32615	5% Si	0.07	2.00	0.045	0.030	4.8-6.0	16.5-19.5	19.0-22.0	0.30-1.50		1.50-2.50
S38815	6% Si	0.030	2.00	0.040	0.020	5.5-6.5	13.0-15.0	15.0-17.0	0.75-1.50		0.75-1.50

Technical Specifications

Specification	Value
Standard	ASTM A312/A312M Seamless, Welded, and Heavily Cold Worked Stainless Steel Pipes
Grade	UNS S30600 (EN 1.4361), S30601, S31254 (254 SMO, F44, X1CrNiMoCuN20-18-7, EN 1.4547), S32053, S32615, S32654 (654 SMO, X1CrNiMoCuN24-22-8, EN 1.4652), S38815, N08020 (Alloy 20, EN 2.4660), N08028 (Alloy 28, Sanicro 28, EN 1.4563), N08029 (Sanicro 29), N08367 (AL-6XN), N08800, N08810, N08811, N08904 (904L, X1NiCrMoCu25-20-5, EN1.4539, Z2NCDU25-20), N08925 (Alloy 925), N08926
Manufacturing Process	Hot Rolled, Cold Worked
Seam Type	Seamless and Welded
Dimension	Pipe OD: NPS 1/8″ – 48″ (10.3-1219.2mm), Pipe WT: SCH5S, 10S, 40S, 80S, XS, XXS
Length	3000-12000mm
Delivery Condition	Solution Annealed, pickling
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Tests	Chemical analysis, Tensile test, Intergranular corrosion test, Metallographic examination

Packing

Both ends are plain or beveled to an angle of 30°+5°/0° as per ANSI B16.25 and equipped with plastic pipe caps or bevel protectors. Small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.

Application

1. Chemical Processing
Pipelines for corrosive chemicals: ASTM A312 stainless steel pipe is ideal for transporting acidic, alkaline, and other chemically aggressive substances.
Reactors and pressure vessels: Due to their corrosion resistance and high-pressure tolerance, A312 Pipes are used in constructing chemical reactors and pressure vessels.
2. Oil & Gas Industry
Offshore and onshore pipelines: Suitable for fluid transportation in highly corrosive environments, including seawater and hydrocarbons.
Refining and processing plants: Used for piping in refineries where high temperatures and corrosive media are ordinary.
3. Food and Beverage Industry
Sanitary piping systems: Due to its excellent corrosion resistance and ease of cleaning, ASTM A312 stainless steel is used for food-grade applications such as dairy processing, beverage production, and brewing.
Liquid transport: Stainless steel pipes transport liquids and gases in sanitary conditions, reducing contamination risks.
4. Pharmaceutical and Biotech
Sterile processing lines: These are used in pharmaceutical production facilities to transport ultra-pure liquids and gases without contamination.
Production equipment: Stainless steel is critical to maintaining clean surfaces and resisting corrosion from cleaning agents in sterile environments.
5. Power Generation
Boiler and heat exchanger tubes: Stainless steel pipes are used in boilers and heat exchangers where resistance to heat, pressure, and corrosion is critical.
Nuclear power plants: ASTM A312 stainless steel is used in critical piping systems in nuclear reactors due to its strength and reliability in extreme conditions.
6. Water Treatment and Desalination Plants
Saltwater and brine transport: This material is ideal for pipelines that handle desalinated water or brine, as it resists corrosion from chlorides and seawater exposure.
Water distribution systems: Stainless steel pipes maintain the purity of potable water when transporting it in large systems.
7. Construction and Infrastructure
Architectural applications: Stainless steel pipes are used for structural elements, handrails, and other architectural features where aesthetics and durability are essential.
Wastewater and drainage systems: It is also used in sewage and drainage systems due to its resistance to corrosion from wastewater and aggressive chemical agents.
8. Automotive and Aerospace
Exhaust systems: Stainless steel pipes are commonly used in automotive and aerospace applications for exhaust systems due to their high-temperature tolerance and corrosion resistance.
Fuel and hydraulic lines: They are also used for high-pressure hydraulic systems and fuel lines in the aerospace and automotive industries.
9. Marine Applications
Shipbuilding: Used for piping systems in ships, especially those exposed to seawater or other corrosive environments.
Offshore platforms: Ideal for offshore oil platforms where exposure to saltwater and harsh conditions demands durable materials.
10. Cryogenic Applications
Low-temperature processing: ASTM A312 pipes are used in cryogenic plants and processes because they can withstand extremely low temperatures without becoming brittle.