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Stainless Steel
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Stainless steel combines corrosion resistance, strength, and versatility across a wide range of applications. Primrose Alloys sources stainless steel tubing, pipe, bar, and other product forms for oil & gas, food processing, medical, automotive, and power generation—helping customers select the right grade and specifications for their application.

Seamless Tubing

Instrumentation, fractional, heat exchanger, condenser, boiler and superheater tubing

Range

OD Range: 1/16″ to 12″
Wall Range: 0.010″ to 0.188″

Grades

304 / 304L (S30400 / S30403) · 316 / 316L (S31600 / S31603) · 310S / 310H (S31008 / S31009) · 317L (S31703) · Duplex 2205 (S32205 / S31803)

Specifications

300 series — ASTM A213, A269 · ASME SA213
Duplex 2205 — ASTM A789 · ASME SA789

Pipe

Energy, chemical, defense, aerospace, food processing, shipbuilding

Range

NPS 1/2″ – 18″

SCH 10 through SCH XXH, including 40S and 80S

Grades

304 / 304L (S30400 / S30403) · 316 / 316L (S31600 / S31603) · 310S / 310H (S31008 / S31009) · Duplex 2205 (S32205 / S31803)

Specifications

ASTM A312, A376, A790 · ASME SA312, SA376, SA790

Hollow Bar

Cold drawn and hot extruded seamless mechanical tube

Range

OD: 1/2″ – 18″

Wall: 0.188″ – 2.000″

Grades

304 / 304L (S30400 / S30403) · 316 / 316L (S31600 / S31603)

Specifications

A511 material available triple-certified to A511 / A269 / A213

Welded Tubing

A cost-saving alternative to seamless tubing across automotive, marine, chemical, pharmaceutical and energy service

Range

OD Range: 1/8″ to 14″
Wall Range: 0.020″ to 0.188″

Grades

304 / 304L (S30400 / S30403) · 316 / 316L (S31600 / S31603) · Duplex 2205 (S32205 / S31803)

Specifications

ASTM A249, A269, A554, A778 · ASME SA249

Sanitary & High-Purity

Finish: ID 20 µin Ra (0.5 µm) maximum · OD 30 µin Ra (0.8 µm) maximum, measured per ASME/ANSI B46.1

Range

OD: 1/2″ – 8″

Wall: 0.065″ – 0.109″

Grades

304 / 304L (S30400 / S30403) · 316 / 316L (S31600 / S31603)

Specifications

ASTM A270, A249, A269 · ASME SA249

3A compliant · ASTM A270 S2 supplemental testing

Bar

Various alloys offer a range of corrosion resistance, hardness, strength, weldability, machinability, and heat treatability.

Shapes

Round, hex, flat, square, half

Grades

15-5 · 17-4 · 303 · 304 / 304L · 316 / 316L · 410 · 416 · 440C

Finishes

Hot rolled, cold drawn, annealed, rough turned, bearing quality

Coils

Instrumentation, heat exchangers, chemical processing, hydraulic lines, subsea systems

Range

OD: 1/8″ – 1″

Wall: 0.010″ – 0.083″

Grades

304 / 304L · 316 / 316L

Specifications

ASTM A213, ASTM A269