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Forever Steel supplies seamless and welded stainless steel pipes for chemical processing, process piping, sanitary systems, heat exchangers and corrosion-resistant applications. Common grades include 304, 304L, 316 and 316L, depending on service environment.
|
Product Route |
Outside Diameter |
Wall Thickness |
Available Length |
Typical Selection Basis |
|
Seamless stainless pipe |
6–762 mm (1/4–30 in) |
0.5–65 mm; SCH 5S to SCH XXS by applicable size and standard |
5.8, 6, 11.8 or 12 m; custom lengths up to 20 m subject to review |
Pressure/process piping, heat exchange and services where seamless construction is specified |
|
Welded stainless pipe |
6–2032 mm (approximately 1/4–80 in) |
0.5–50 mm; SCH 5S to SCH 160 by applicable size and standard |
5.8, 6, 11.8 or 12 m; custom lengths up to 18 m |
Large-diameter piping, water treatment, desalination, chemical systems and fabricated project pipe |
Final manufacturability depends on the combination of standard, grade, OD, wall thickness, welding or forming route, heat treatment, surface finish, inspection class and order quantity. Maximum OD, wall thickness and length should not be interpreted as simultaneously available for every grade.
Our production strictly adheres to international metallurgical benchmarks to ensure global project compatibility:
1. Standards compliance
|
Standard / framework |
Product form |
Typical grades |
What buyers should confirm |
|
ASTM A312 |
Seamless and welded stainless pipe |
TP304, TP304L, TP316, TP316L |
OD, wall thickness, schedule, heat treatment, MTC |
|
ASTM A213 |
Seamless boiler, superheater and heat exchanger tubes |
TP304, TP316, TP321, TP347 |
Tube size, tolerance, testing, heat exchanger application |
|
ASTM A269 |
General service stainless tubing |
304, 304L, 316, 316L |
Small OD tubing, surface finish, dimensional tolerance |
|
ASTM A358 |
Electric-fusion-welded stainless pipe |
304/304L, 316/316L |
Weld class, NDT, pressure or process piping requirement |
|
EN 10216-5 / EN 10217-7 |
European seamless and welded stainless tubes |
1.4301, 1.4307, 1.4401, 1.4404 |
EN grade, inspection certificate, project compliance |
|
JIS G3459 |
Stainless steel pipes for piping |
SUS304TP, SUS316TP, SUS316LTP |
JIS grade, pipe size, pressure service, certificate |
2. Grade selection
|
Grade |
Best fit |
Main reason to choose |
Buyer decision points |
|
304 |
General industrial piping |
General corrosion resistance |
Cost, availability, standard, surface finish |
|
304L |
Welded stainless systems |
Lower carbon for welding |
Intergranular corrosion risk, welding method, MTC |
|
316 |
Chloride or marine exposure |
Higher corrosion resistance |
Service environment, chloride level, temperature |
|
316L |
Chemical and welded piping |
Corrosion resistance plus weldability |
MTC, surface finish, standard, inspection requirement |
|
321 / 347 |
High-temperature service |
Stabilized grades for heat exposure |
Operating temperature, heat treatment, specification |
|
Duplex 2205 / 2507 |
High-chloride and demanding corrosion service |
Higher strength and chloride resistance |
Project specification, availability, corrosion testing |
To meet the "Clean-In-Place" (CIP) requirements and high-purity standards:
Surface Treatment: * Pickled & Annealed (AP): For standard industrial corrosion resistance.
Bright Annealed (BA): For mirror-like finish and internal smoothness.
Polished: Grit 180, 240, 320, 400, 600 (Satin or Mirror Finish).
End Preparation: * Plain Ends: Square cut and deburred for orbital welding.
Bevelled Ends: Precisely machined to 30°per ANSI B16.25 for heavy-wall pipes.
Threaded Ends: NPT/BSPT for instrumentation applications.
Our stainless solutions are the benchmark for reliability in:
Sanitary & Food Grade: Dairy, beverage, and pharmaceutical processing.
Petrochemical: Corrosive fluid conveyance and offshore oil platforms.
Energy & Heat Exchange: Condensers, heat exchangers, and high-pressure boilers.
Semiconductor: Ultra-high purity (UHP) gas delivery systems.
Metallurgical Testing: Positive Material Identification (PMI), Intergranular Corrosion (IGC) Test, and Microstructure Analysis.
Structural Integrity: 100% Hydrostatic Testing, Eddy Current (ET), or Ultrasonic Testing (UT).
Compliance: Mill Test Certificates (MTC) issued according to EN 10204 3.1 (3.2 available).
Third-Party Inspection: Full cooperation with SGS, TUV, or BV for pre-shipment release.
We prioritize the arrival of your cargo in "Pristine" condition, free from scratches or atmospheric contamination:
Packaging: * Individual plastic bagging for polished pipes to prevent surface abrasion.
Plywood cases or reinforced steel-frame crates for LCL shipments.
Bundle wrapping with woven material for FCL shipments.
Shipping Security: * Use of nylon slings and specialized handling equipment to avoid carbon steel cross-contamination.
Sea-worthy bracing and moisture-proof desiccant within containers.
Heavy-duty plastic end caps to protect internal cleanliness and bevel integrity.
1. Seamless or welded construction and applicable ASTM, ASME, EN or JIS standard.
2. Grade or UNS designation: 304/304L, 316/316L, 321, 347, duplex or project-specific alloy.
3. Outside diameter, wall thickness or schedule, length and quantity.
4. Service medium, chloride exposure, temperature, pressure and corrosion allowance.
5. Surface finish: pickled and annealed, bright annealed, polished finish and required Ra value where applicable.
6. Heat treatment, weld class, NDT, hydrostatic or pneumatic testing, PMI and corrosion testing requirements.
7. Pipe ends, orbital-welding preparation, internal weld-bead requirement and cleanliness/packing requirement.
8. MTC, inspection certificate, third-party inspection, packing and destination port.
