Alloy steel pipe

Alloy steel pipe2026-06-14T13:02:23+00:00

product introduction.

Nickel base alloy has high content such as Cr, Ni, Mo, and so on. It has good comprehensive  properties  in high temperature and high corrosive environment, such as strong resistance to acid alkali corrosion ability; good resistance to high temperature corrosion ,stress corrosion; some has good corrosion  resistance in reducing medium and oxidation media.

application.

It is widely used in thermal power of the flue gas depressurization device, waste water treatment ;  petrochemical ,marine development industry , heat exchange ,evaporator, condenser and line manufacturing ; nuclear electric power generation  the comprehensive utilization of coal and tidal power in energy field; marine structures of marine environment; seawater desalination ,sea water heat ex-changer etc.

steelcode/steelGrade

  • Monel400/K500;

  • Inconel600/601/625/718/725/617/740;

  • HastelloyalloyC22/C276/C2000/B/B2/B3/X/230/G2/G3/G30/G35; Incoloy800/H/HT/8028/825/8330/840/925/926/8120;

  • Ni200;Ni201;Alloy20;

Available standard

ASTM B163 ASME SB163) Seamless nickel and nickel alloy condenser and heat exchanger tube

ASTM B165(ASME SB165) Seamless nickel – copper alloy seamless nominal pipe and tube

ASTM B167(ASME SB167) Seamless ni – cr – iron alloy and nickel – cobalt – chromium – molybdenum alloy seamless nominal pipe and tube

ASTM B407(ASME SB407) Seamless nickel – iron – chromium alloy nominal pipe and tube ASTM

ASTM B423(ASME SB423) Seamless nickel – iron – chromium – molybdenum – copper (UNS N08825 and UNS N08221) nominal pipe and tube ASTM

B444 (ASME SB444)(Seamless nickel – chromium – molybdenum, niobium alloy (UNS N06625) and nickel – chromium – molybdenum – silicon alloy UNS N06219)Nominal pipe and tube

ASTM B622 (ASME SB622) Seamless nickel and nickel – cobalt alloy nominal pipe and tube

ASTM B668 (ASME SB668) UNS N08028 seamless tube

ASTM B690(ASME SB690) Seamless iron – nickel – chromium – molybdenum (UNS N08366, UNS N08367) nominal pipe and tube

ASTM B729 (ASME SB729) Seamless UNS N08020, UNS N08026, UNS N08024 nickel alloy nominal pipe and tube

What materials and grades do your seamless pipes cover?2026-06-14T12:40:45+00:00

Answer:

stainless steel : 304/L,316/L,347H,316Ti,317/L,253Ma,904L,

Duplex Steel: S31254(254SMo)S31803;S32205;S32750;S32760

Alloy steel:

Monel400/K500;

Inconel600/601/625/718/725/617/740;

HastelloyalloyC22/C276/C2000/B/B2/B3/X/230/G2/G3/G30/G35; Incoloy800/H/HT/8028/825/8330/840/925/926/8120;

Ni200;Ni201;Alloy20;

Customization according to ASTM/EN/JIS/GB standards is available.

What’s the difference between seamless pipe and welded pipe?2026-06-14T12:43:05+00:00

Seamless pipe has no welding seam, featuring higher pressure bearing capacity, stronger corrosion resistance and higher dimensional accuracy, which is suitable for high-pressure/high-temperature/corrosive working conditions (such as petroleum, chemical industry, boiler). Welded pipe has a welding seam with lower cost, suitable for low-pressure fluid transmission.

What are the common execution standards?2026-06-14T12:43:50+00:00

For stainless steel: ASTM A312/A269/A789, EN 10216, GB/T 14976; For alloy steel: ASTM B163( ASME SB163) ,ASTM B165(ASME SB165), ASTM B167(ASME SB167), ASTMB444 (ASME SB444)EN 10216, GB/T 8163.

What is your production process?2026-06-14T12:44:29+00:00

We adopt Hot Rolling (Hot Extrusion) + Cold Drawing (Precision Rolling) process to ensure seamless without welding seam. Process flow: Round Billet → Heating → Piercing → Hot Rolling → Cold Drawing → Heat Treatment → Finishing → Inspection.

What quality certificates can you provide?2026-06-14T12:45:08+00:00

We can provide MTC (Mill Test Certificate EN 10204 3.1/3.2), Chemical Composition Report, Mechanical Property Report, Non-destructive Testing (UT/ET/RT), Hydro-static Test, ISO 9001, PED, CE.

Do you support third-party inspection?2026-06-14T12:45:46+00:00

Yes, we support third-party inspection by SGS, BV, TUV, Intertek etc., and whole-process supervision of production is available.

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