2 Inch Stainless Steel Pipe

Specifications

Item	2 Inch Stainless Steel Pipe
Standards	ASTM A312, ASTM A778, EN 10217-7, ASME B36.19
Outer Diameter	60.3mm
Material Grades	304, 304L, 316, 316L
Wall Thickness	SCH 5S – SCH 80S
Surface Finishes	Pickled & White Finished, 2B Hot Rolled, Polished, Hairline, Mirror Finish
MOQ	10 Tons
Packaging	Standard Export Packaging

Product Advantages

• Corrosion Resistance: Suitable for long-term outdoor service, resistant to rain and atmospheric erosion. A chromium-rich passive film forms on the surface for lasting anti-rust performance.
• High Strength & Durability: Stable pressure bearing capacity, compatible with international standard fittings. Higher tensile strength than carbon steel pipe even under high temperature and high pressure conditions.
• Sanitary Performance & Long Service Life: Service life can reach decades. Low flow resistance, no harmful substance precipitation, low maintenance cost. Applicable for food and medical industries.
• Excellent Machinability: We supply all listed surface finishes for fluid transportation and decorative usage, supporting wide operating temperature range and customized wall thickness.

Applications

• Industrial Fluid Piping: Convey compressed air, petroleum, gas, acidic and alkaline liquids & gases.
• Water Treatment Piping: Municipal purified water filtration, seawater desalination equipment, portable drinking water pipelines.
• Food, Beverage & Pharmaceutical Piping: Reaction and conveying pipelines for milk, beer, fruit juice and pharmaceutical factories, sanitary stainless steel pipelines.
• Marine & Vessel Systems: Onboard piping for ships, pump station pipelines in coastal areas.

Manufacturing Classification of 2 Inch Stainless Steel Pipe

1. Seamless 2 Inch Stainless Steel Pipe: Manufactured from stainless steel billet via piercing, extrusion and cold drawing. Pipes made by this process achieve higher pressure bearing capacity.
2. Welded 2 Inch Stainless Steel Pipe: Mainstream product manufactured from stainless steel coils. Available in multiple wall thickness options with obvious cost advantages.

Wall Thickness Schedule Chart

Nominal Size	OD	Schedule	Wall Thickness mm	Wall Thickness inch	ID mm	Theoretical Weight kg/m
NPS2 / DN50	60.3 mm	SCH 5S	2.77mm	0.109	54.76	3.84
NPS2 / DN50	60.3 mm	SCH 10S	3.91mm	0.154	52.48	5.34
NPS2 / DN50	60.3 mm	SCH 40S (STD)	5.54mm	0.218	49.22	7.38
NPS2 / DN50	60.3 mm	SCH 80S (XS)	7.82mm	0.308	44.66	9.97

Flattening Test (ASTM A312): SCH 5S~10S: flatten to 1/2 outer diameter without cracks; SCH 40S~80S: flatten to 2/3 outer diameter without cracks.

Material Grades

• TP304: General-purpose austenitic stainless steel. Good corrosion resistance and easy processing.
• TP304L: The suffix “L” stands for low carbon (Carbon ≤ 0.03%). Prevents chromium carbide precipitation during welding, ideal for welded applications.
• TP316: Upgraded stainless steel containing molybdenum. Superior resistance against acid, alkali and chloride corrosion with enhanced high-temperature strength.
• TP316L: Dual optimization of low carbon (“L”) plus molybdenum. Effectively avoids intergranular corrosion for welded conditions, relatively higher cost.

Note: TP is the prefix (Type) for pipe grades under ASTM A312, exclusively for tubular products. Stainless steel plates, coils, and strips do not adopt TP grade designation.

Applicable Temperature Range

Grade	Overall Operating Temperature Range	Continuous High-Temperature Oxidation Resistance Limit
TP304 / TP304L	-196℃ ~ 870℃	≤815℃
TP316 / TP316L	-196℃ ~ 870℃	≤815℃

Tip: For long-term service between 425℃～815℃, 2 inch 304L & 316L pipes are recommended.

Physical and tensile properties

Property Parameter	TP304	TP316	Unit
Density	7.93	7.98	g/cm³
Modulus of Elasticity (E)	193	193	GPa
Thermal Expansion Coefficient (0–100°C)	17.2	16.0	×10⁻⁶/°C
Thermal Conductivity (100°C)	16.2	16.3	W/(m·K)
Resistivity	0.72	0.74	μΩ·m

Tensile Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)
TP304	≥515	≥205	≥35	≤92
TP304L	≥485	≥170	≥35	≤92
TP316	≥515	≥205	≥35	≤95
TP316L	≥485	≥170	≥35	≤95

Note: Grades marked with “L” show slightly lower strength, yet significantly improved resistance to intergranular corrosion after welding.

Pressure Calculation Formula

P = 2·S·t / (OD – 2·t·y)

• P = Maximum Allowable Working Pressure (MPa)
• S = Design Stress (115 MPa for TP304/316 at ambient temperature, safety factor = 4)
• t = Wall Thickness (mm)
• OD = Outer Diameter (mm)
• y = Temperature Correction Factor (0.4 under ambient temperature)

Dimensional Tolerance ASTM A312

Outer Diameter: ±0.4mm for 60.3mm OD; Wall Thickness: ±12.5% of nominal thickness; Cut Length: ±3 mm; Straightness: ≤1.0mm/m; Ovality: Within twice OD tolerance.

Pressure Rating Reference for NPS 2 SS Pipe

Design safety factor = 4:1, ambient temperature service (≤38°C). Independent verification required for formal engineering design.

1. Maximum Allowable Working Pressure (MAWP)

Schedule	Wall Thickness (mm)	MAWP (MPa)	MAWP (psi)
SCH 5S	1.65	~4.2	~610
SCH 10S	2.77	~7.0	~1,015
SCH 40S	3.91	~10.1	~1,465
SCH 80S	5.54	~14.5	~2,100

Note: Pressure capacity of welded pipes equals 85%~90% of above values (weld joint factor = 0.85).

2. Pressure Derating Factor at Different Temperatures

Allowable stress of stainless steel declines under high temperature, pressure rating needs to be multiplied by derating factor:

Operating Temperature	Derating Factor for 304	Derating Factor for 316
≤38°C	1.00	1.00
100°C	0.88	0.91
200°C	0.78	0.82
300°C	0.69	0.74
400°C	0.57	0.63

Example: SCH 40S pipe at 200°C, actual pressure capacity of 304 ≈ 10.1 × 0.78 = 7.9 MPa.

Why Choose Glory Steel?

• Supply full-grade and full-specification 2-inch stainless steel pipes with competitive factory-direct prices
• Standard moisture-proof export packaging; customized plastic end caps available
• Strict complete quality inspection procedure to guarantee compliance with ASTM A312
• Regular sizes kept in stock to shorten lead time; free samples available

Glory Steel factory, located in Tianjin, China, is an ISO 9001, ISO 14001, and CE-certified factory with an annual output of 100,000 tons. It specializes in producing 1-inch, 2-inch, 3-inch, 4-inch stainless steel tubing & pipes. With our high-quality products and services, we export to over 120 countries.