Opis
Hebei Haihao High Pressure Flange and Pipe Fitting Group Co., Ltd. je profesionalno preduzeće za proizvodnju prirubnica i cevnih fittinga, sa 20 naprednih proizvodnih linija za prirubnice i fittinge. Može proizvoditi serijske proizvode cevnih elemenata od nerđajućeg čelika, legiranog čelika, ugljeničnog čelika, prirubnica, kolena, krivina, trojnika, redukcija, utičnih fittinga itd., u skladu sa međunarodnim i domaćim standardima visokog, srednjeg i niskog pritiska.
Primene
Naftni gas, hemijska industrija, elektrane, brodogradnja, farmacija, posude pod pritiskom, komunalno grejanje i vodovodne cevi.
Tehničke specifikacije
Standard izrade: ASME B16.x / EN 102xx / GB/T 12459 / GB/T 14383; Materijal: ASTM A234 WPB/WP11/WP22; A403 WP304/WP316/WP347; A420 WPL6; Dimenzije: 1/2" - 48" (DN15 - DN1200); Debljina zida / Nazivni pritisak: Sch 10 - Sch XXS / PN 6 - PN 420; Površinska obrada: sačmarenje, uljanje, farbanje ili pocinkovanje.
Referentni standardi
- Naziv standarda
- Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
- Izdavač
- ASTM International
Slični / alternativni materijali
Ovaj proizvod pokriva više osnovnih marki. Alternative ispod su grupisane po porodici — svaka kartica je putanja nadogradnje od označene osnovne marke. Konačan izbor odobrava materijalni inženjer.
Switch to A420 WPL6 when service temp ≤ -29°C (Charpy at -46°C); WPB is not qualified for low temperature.
For creep range (~450-540°C) move to 1.25Cr-0.5Mo (WP11) or 1Cr-0.5Mo (WP12).
For high-temp creep / hydrogen service use 2.25Cr-1Mo (WP22), common in hydrotreaters and boiler reheat.
Ultra-supercritical main steam / 540-620°C zones use 9Cr-1Mo-V (Grade 91).
Selection window: MDMT between -101°C and -46°C (colder than WPL6, warmer than 9% Ni). Charpy at -150°F (-101°C); typical for ethylene and deep cryogenic propane lines.
LNG (-162°C) / liquid nitrogen (-196°C) butt-weld fittings use ASTM A420 WPL8 (Ni 8.4–9.6%, commonly called 9% Ni; Charpy at -320°F / -196°C); matching pipe A333 Gr.8, forgings A522.
Chloride service (Cl⁻ > 50 ppm, especially T > 60°C): use 316L; higher chloride or temperature still risks SCC — upgrade to duplex.
Seawater / high chloride / moderate temperature butt-weld fittings: duplex 2205 (A815 WP-S31803), PREN ≈ 35, better pitting resistance than 316L. A182 F51 covers forgings/flanges.
Offshore / FPSO / water injection wellhead: super duplex 2507 (A815 WP-S32750), PREN ≈ 42–43 (industry SDSS threshold ≥ 40). A182 F53 covers forgings/flanges.
Strong acid / high-temp sour / hydrogen service: upgrade to Inconel 625 (UNS N06625, WPNCMC) or Incoloy 825 (UNS N08825, WPNICMC).
Hydrochloric acid / wet chlorine / strongly reducing media: Hastelloy C-276 (UNS N10276, WPHC276).
Tipične primene po granama
Uobičajena upotreba ovog materijala/kategorije u stvarnim projektima. Uporedite sa projektnom specifikacijom pre zaključenja BOM-a.
- Oil & Gas PipelinesOnshore crude / gas trunk lines: API 5L X42 and below pair with A234 WPB; X52-X70 must pair with MSS SP-75 WPHY-52/60/65/70 (yield-strength match). Service window -29 to +120°C (B31.4 / B31.8 onshore practice).
- Water & Fire ProtectionMunicipal water, cooling-water loops, fire mains; carbon steel with galvanizing or epoxy lining.
- LNG / CryogenicPropane / LPG (~-46°C) → A420 WPL6; ethylene (~-101°C) → A420 WPL3; LNG (-162°C) / liquid nitrogen (-196°C) butt-weld fittings step up to A420 WPL8 (Ni 8.4–9.6%, commonly called 9% Ni).
- Power GenerationSub / supercritical main steam and reheat lines: WP11 (~540°C) / WP22 (~565°C) / WP91 (~620°C).
- Refinery / HydroprocessingHydrocracking / hydrotreating reactor in/out lines; hydrogen-service per Nelson curve uses WP5 / WP9 / WP22.
- OffshoreSeawater loops / FPSO process lines prefer duplex A815 WP-S31803 (2205) / super duplex A815 WP-S32750 (2507); 316L only for short-term or low-chloride sections (SCC risk above ~60°C even with 316L).
Standardi i materijali
Sledeće informacije služe za izbor proizvoda i komunikaciju oko RFQ. Konačni zahtevi prate crteže, standarde i nabavnu dokumentaciju.
