SS seamless pipe

Forever Steel Manufacturing Co., Ltd
Pipe fittings,Duplex stainless steel pipe,Structural steel plate

Product Category

Latest news list

  • Bitumen coated pipe,Austenitic stainless steel,Production tubing
    How to bend exhaust pipe efficiently without kinks and damage?
    You need custom curves for a specific project,but bending steel often results in wrinkles or cracks,It is frustrating when a simple modification ruins high-quality steel,I will show you how to get the perfect angle,To learn how to bend exhaust pipe effectively,you must support the internal structure to prevent collapse,For manual bending
  • Electric resistance welded,3LPP coated pipe,Polyethylene coated pipe
    How to Prevent Natural Gas Pipeline Corrosion: Best Practices and Modern Solutions
    Natural gas is a highly flammable and explosive energy source,and its safe transportation is a matter of great importance,Among all transportation methods,long-distance pipelines are considered the safest,fastest,and most cost-effective solution,However,during the operation of these pipelines
  • Structural hollow section,Precision seamless pipe,Drill pipe
    The Application and Technical Performance of PE Coated Pipe in Building Water Supply Systems
    In modern construction and residential water supply systems,PE coated pipe has become one of the most reliable and widely used materials,Known for its corrosion resistance,durability,and flexibility,it provides a practical solution for both hot and cold water pipelines,Below,we explore the operating conditions,installation considerations,and technical performance of PE coated pipes in building applications,

SS seamless pipe

SS seamless pipe
SS seamless pipe
SS seamless pipe
SS seamless pipe
SS seamless pipe

Product Type: Stainless Steel Seamless Pipe;Stainless Steel Pipe;Boiler, Heat Exchanger Stainless Steel Seamless Steel Pipe;Super Austenitic Stainless Steel Seamless Pipe And Tube;Duplex Phase Steel Seamless Pipe And Tube;Anticorrosion Alloy Seamless Tube;

OD Range: 6mm – 762mm (1/4" to 30")

WT Range: 0.5mm – 65mm (SCH 5S to SCH XXS)

Lengths: 5.8m, 6m, 11.8m, 12m, or Customized

Surface: Pickled, Bright Annealed (BA), Polished

Process: Cold Drawn, Cold Rolled, Hot Rolled

Pipe Standard: ASTM A312, A213, A269；ASTM A789, A790；ASME SB163, SB444；ASTM B677, A928

Steel Grade: 304/L, 316/L, 310S, 321, 347H,S31803, S32205, S32750, S32760 etc

Application: Boilers, Heat Exchangers, Power Generation,Offshore Engineering, Petrochemical, Refineries,Chemical Processing, Water Treatment, Mining,Pharmaceutical, Food & Beverage, Sanitary

  • Description
  • Specification
  • Standard
  • Process
  • Packing

Seamless Stainless Steel & Nickel Alloy Pipes

We provide high-performanceSeamless Stainless Steel PipesandNickel-Base Alloy Tubesengineered for extreme industrial environments. From standard ASTM grades to specialized Duplex and Titanium alloys, our SMLS piping solutions offer unmatched corrosion resistance and structural integrity.


1. Comprehensive Technical Specifications

Our production line covers a vast range of dimensions to meet the precise requirements of global engineering projects:

Outside Diameter (OD):6mm to 762mm (1/4" to 30")

Wall Thickness (WT):0.5mm to 65mm (SCH 5S to SCH XXS)

Lengths:5.8m, 6m, 11.8m, 12m, or customized up to 20m.

Manufacturing Processes:Cold Drawn, Cold Rolled, Precision Rolled, and Hot Rolled.

Surface Finishes:Pickled & Annealed, Bright Annealing (BA), and Polished (Mirror/Satin).


2. Industry Standards & Material Grades

We strictly adhere to international quality benchmarks, providingMaterial Test Certificates (MTC)according to EN 10204 3.1/3.2 for every shipment.

Seamless Stainless steel Pipe specification and size

Standard

Dimension

 Steel Grade

ASTM A312

OD: 1/4"-20"
WT: SCH5S-SCH80S

TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254, 904L

ASTM A213

OD: 6.0-50.8mm
WT: 0.8-10.0mm

TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254, 904L

ASTM A269

OD: 6.0-50.8mm
WT: 0.8-10.0mm

TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti,
TP317, TP317L, TP321, TP321H, TP347, TP347H, S31254

ASTM A789

OD: 19.0-60.5mm
WT: 1.2-5.0mm

S31803, S32205, S32750,S32760

ASTM A790

OD: 3/4"-10"
WT: SCH5S-SCH80S

S31803, S32205, S32750,S32760

EN 10216
DIN 17456
DIN 17458

OD: 6.0-530.0mm
WT: 0.8-34.0mm

1.4301, 1.4307, 1.4541, 1.4401, 1.4404,
1.4571, 1.4878, 1.4432, 1.4462


3. Strategic Industrial Applications

Our seamless tubes are the preferred choice for critical fluid transportation and heat exchange in:

Energy & Power:Boilers, superheaters, heat exchangers, and renewable energy.

Oil & Gas:Offshore engineering, ship building, and petrochemical refineries.

Industrial Processing:Chemical, mining, water treatment, and paper industries.

Precision Engineering:Aviation, pharmaceutical, and high-purity sanitary systems.

Infrastructure:Construction, HVAC systems, and marine engineering.


4. Export-Ready Packaging & Logistics

We ensure zero-damage delivery to international markets (Middle East, Southeast Asia, Africa, and beyond):

Protection:Plastic caps plugged on both ends; anti-rust oil or corrosive coating applied.

Wrapping:Waterproof paper or woven bags wrapped for maritime protection.

Bundling:Secure hexagonal bundles for safe crane handling and container loading.

ASTM A312 Pipe Chemical components

Grade UNS No. C Mn P S Si Cr Ni Mo Other
TP304 S30400 0.08 2 0.045 0.03 1 18.0-20.0 8.0-11.0 - -
TP304L S30403 0.035 2 0.045 0.03 1 18.0-20.0 8.0-12.0 - -
TP316 S31600 0.08 2 0.045 0.03 1 16.0-18.0 11.0-14.0 2.0-3.0 -
TP316L S31603 0.035 2 0.045 0.03 1 16.0-18.0 10.0-14.0 2.0-3.0 -
TP321 S32100 0.08 2 0.045 0.03 1 17.0-19.0 9.0-12.0 - Ti: 5x(C+N)-0.70
TP347 S34700 0.08 2 0.045 0.03 1 17.0-19.0 9.0-13.0 - Cb+Ta: 10xC-1.10
TP310S S31008 0.08 2 0.045 0.03 1 24.0-26.0 19.0-22.0 - -

ASTM A312 Pipe Sizes and Dimensions

NPS Designator Outside Diameter Nominal Wall Thickness
in. mm Schedule 5SA (in.) Schedule 5SA (mm) Schedule 10SA (in.) Schedule 10SA (mm) Schedule 40S (in.) Schedule 40S (mm) Schedule 80S (in.) Schedule 80S (mm)
1/8 0.405 10.29 ... ... 0.049 1.24 0.068 1.73 0.095 2.41
1/4 0.54 13.72 ... ... 0.065 1.65 0.088 2.24 0.119 3.02
3/8 0.675 17.15 ... ... 0.065 1.65 0.091 2.31 0.126 3.2
1/2 0.84 21.34 0.065 1.65 0.083 2.11 0.109 2.77 0.147 3.73
3/4 1.05 26.67 0.065 1.65 0.083 2.11 0.113 2.87 0.154 3.91
1 1.315 33.4 0.065 1.65 0.109 2.77 0.133 3.38 0.179 4.55
1 1/2 1.66 42.16 0.065 1.65 0.109 2.77 0.14 3.56 0.191 4.85
1 1/4 1.9 48.26 0.065 1.65 0.109 2.77 0.145 3.68 0.2 5.08
2 2.375 60.33 0.065 1.65 0.109 2.77 0.154 3.91 0.218 5.54
2 1/2 2.875 73.03 0.083 2.11 0.12 3.05 0.203 5.16 0.276 7.01
3 3.5 88.9 0.083 2.11 0.12 3.05 0.216 5.49 0.3 7.62
3 1/2 4 101.6 0.083 2.11 0.12 3.05 0.226 5.74 0.318 8.08
4 4.5 114.3 0.083 2.11 0.12 3.05 0.237 6.02 0.337 8.56
5 5.563 141.3 0.109 2.77 0.134 3.4 0.258 6.55 0.375 9.52
6 6.625 168.28 0.109 2.77 0.134 3.4 0.28 7.11 0.432 10.97
8 8.625 219.08 0.109 2.77 0.148 3.76 0.322 8.18 0.5 12.7
10 10.75 273.05 0.134 3.4 0.165 4.19 0.365 9.27 0.5 12.7
12 12.75 323.85 0.156 3.96 0.18 4.57 0.375 9.52 0.5 12.7
14 14 355.6 0.156 3.96 0.188 4.78 ... ... ... ...
16 16 406.4 0.165 4.19 0.188 4.78 ... ... ... ...
18 18 457.2 0.165 4.19 0.188 4.78 ... ... ... ...
20 20 508 0.188 4.78 0.218 5.54 ... ... ... ...
22 22 558.8 0.188 4.78 0.218 5.54 ... ... ... ...
24 24 609.6 0.218 5.54 0.25 6.35 ... ... ... ...
30 30 762 0.25 6.35 0.312 7.92 ... ... ... ...

ASTM A312 Steel Pipe Size Tolerance Table:

Standard Out diameter (mm) Wall thickness (mm) Length (mm)
ASTM A312 ≤48.26 +0.4 +(Unspecified)-12.50% Definite cut length+6.40-0
-0.8
>48.26~114.30 +0.8
-0.8
>114.30~219.08 +1.6
-0.8
>219.08~457.20 +2.4/-0.8
>457~660 +3.2
-0.8
>660~864 +4
-0.8
>864~1219 +4.48
-0.8

Weight And Thickness Of S.S Gauge Pipes

Size (inch) OD (mm) 10 SWG (3.2mm) 12 SWG (2.6mm) 14 SWG (2.1mm) 16 SWG (1.65mm) 18 SWG (1.2mm)
Unit - Weight/Mtr Weight/Mtr Weight/Mtr Weight/Mtr Weight/Mtr
1/2" 12.7 0.754 0.651 0.552 0.452 0.342
3/4" 19.05 1.258 1.061 0.883 0.712 0.531
1" 25.4 1.762 1.47 1.214 0.972 0.72
1 1/2" 38.1 2.77 2.289 1.875 1.492 1.098
2" 50.8 3.778 3.108 2.537 2.012 1.476
3" 76.2 5.794 4.747 3.86 3.051 2.232
4" 101.6 7.81 6.385 5.183 4.091 2.988

Seamless Stainless Steel Pipe Production Process

Relevant Products

SS seamless pipe,Square steel tubing,MS plate,Stainless steel pipe

Contact

facebooklinkedininstagramtwitter

Products

Projects

Quick Links

Copyright © 2026 Forever Steel Manufacturing Co., Ltd  All rights reserved.

Find what you need ?

close