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Help CenterSteel Pipe & Tube & Cast Pipe，ZG40Cr25Ni20Si2、ZG30Cr18Mn12Si2N、ZG40Cr28Ni48W5Si2
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Cast Pipe is a special industrial pipe formed by pouring molten alloy metal. In the industry, Cast Pipe, Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe are collectively defined as cast‑formed pipes for severe high‑temperature working conditions. Cast Pipe is directly formed by casting without hot rolling or cold drawing processes. Centrifugal Cast Pipe adopts high‑speed centrifugal force to distribute molten metal evenly, achieving dense metallographic structure with few porosity and shrinkage defects. It is superior to rolled seamless pipes for heavy‑wall and high‑alloy special material production. Made of high‑chromium‑nickel heat‑resistant alloys,Heat‑Resistant Cast Pipe delivers outstanding high‑temperature resistance, creep resistance, thermal‑fatigue resistance, wear and corrosion resistance. It can serve stably under long‑term high‑temperature, oxidation, carburizing and sulfidation environments, acting as core high‑temperature pressure‑bearing components for petrochemical furnaces, heat‑treatment equipment, metallurgy & power plants and hydrogen‑production reformers. Cast Pipe covers straight pipes, bent pipes, radiant tubes and headers, supporting custom‑made per drawings. UT ultrasonic testing and PT penetrant inspection are available with complete material test reports for domestic high‑temperature industrial projects and export orders.
1. Material Grades
‑ Heat‑resistant cast steel: ZG40Cr25Ni20Si2, ZG30Cr18Mn12Si2N, ZG40Cr28Ni48W5Si2
‑ ASTM alloy grades: HK40, HP40, HP40‑Nb, HK‑40‑mod for petrochemical cracking & reformer furnaces
‑ Nickel‑base alloys: Inconel 600, Incoloy 800H for ultra‑high‑temperature heavy‑corrosion conditions
‑ Wear‑resistant cast steel available, special alloy Cast Pipe customizable according to customer drawings and working conditions.
2. Execution Standards
‑ National Standard: GB/T 8492‑2014
‑ American Standards: ASTM A426, ASTM A608, ASME SA608
‑ German Standard: DIN EN 10295
‑ Cast Pipe, Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe support SGS third‑party inspection. Spectrum analysis, mechanical test and non‑destructive test reports can be provided to satisfy acceptance standards for domestic and overseas high‑temperature equipment projects.
3. Specification Parameters
Cast Pipe: OD 50‑1200mm, wall thickness 8‑150mm, length 0.5‑12m. Plain end, bevel end and flange connection are available. Featuring prominent advantages in heavy‑wall sizes, Centrifugal Cast Pipe owns uniform wall thickness and dense microstructure. It can produce straight tubes, U‑shaped radiant tubes, bent pipes and headers. Heat‑Resistant Cast Pipe long‑term operating temperature ranges 600‑1200℃. Non‑standard sizes and drawing‑based customization are supported for single‑piece and bulk orders.
4. Main Classification & Process Features
‑Centrifugal Cast Pipe: Formed by high‑speed centrifugal pouring, dense internal structure with few slag inclusion and pores, excellent mechanical performance. Widely used as mainstream Cast Pipe for high‑temperature pressure‑bearing tubes and radiant tubes;
‑Heat‑Resistant Cast Pipe: High‑Cr‑Ni heat‑resistant alloy grade, anti‑oxidation, anti‑creep and anti‑thermal‑fatigue performance, applied for cracking furnaces, reformers and heat‑treatment furnaces under high‑temperature corrosive conditions;
‑Static sand‑mold cast pipe: Suitable for complex special‑shaped pipe fittings and large‑diameter headers, realizing complicated structures hardly achieved by rolling process.
5. Surface Treatment & Packaging
‑ Machining: bevel processing, end‑face finishing, inner‑outer wall grinding for welding & assembly dimension requirements;
‑ NDT inspection: UT ultrasonic test, PT penetrant test to detect internal and surface defects;
‑ Surface treatment: sandblasting to remove oxide scale, anti‑corrosion coating upon request;
‑ Packing: reinforced wooden frame & wooden case to avoid collision damage, guarantee transportation safety for Cast Pipe, Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe for land shipment and ocean export.
6. Applications
Cast Pipe is widely used in petrochemical industry, hydrogen‑production & ammonia synthesis, metallurgical heat‑treatment, power energy and environmental‑protection furnaces.Centrifugal Cast Pipe serves as ethylene cracking furnace tubes, steam reformer radiant tubes, heater convection section tubes and annealing furnace radiant tubes. Heat‑Resistant Cast Pipe is applied for high‑temperature heat exchangers, furnace inner conveying pipes, furnace rollers and wear‑resistant slag‑discharge pipes. It withstands high‑temperature oxidation, carburization, sulfidation corrosion and cyclic thermal shock, handling extreme working conditions which ordinary rolled steel pipes cannot cope with. It is an indispensable special pipe for high‑temperature industrial equipment.
7. Product Advantages
Cast Pipe realizes forming of high‑alloy, heavy‑wall and complex special‑shaped pipe fittings, breaking material and structural limits of rolling technology.
Centrifugal Cast Pipe gains dense & uniform grain structure by centrifugal casting, low porosity‑shrinkage defects, excellent high‑temperature creep‑resistance and thermal‑fatigue resistance.
Heat‑Resistant Cast Pipe features outstanding high‑temperature oxidation resistance and sulfidation‑carburizing corrosion resistance, resisting deformation & cracking under long‑term high‑temperature service for long service life.
Custom service for straight tubes, bent tubes, radiant tubes, headers and other special‑shaped parts based on drawings, one‑stop service including machining and non‑destructive testing.
Complete material grades and full‑set inspection documents, meeting procurement demands of domestic industrial projects and overseas high‑temperature‑equipment foreign‑trade orders.
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