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Help CenterSteel Pipe & Tube & Cast Pipe，ASTM A426 Gr.1、ASTM A426 Gr.8、1.4848、1.4852
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Cast Pipe is special seamless tubular product formed by pouring molten metal. In the industry, Cast Pipe, Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe are collectively defined as special casting‑formed piping. Formed by centrifugal casting process to obtain dense metallographic structure, Cast Pipe integrates excellent high‑temperature resistance, thermal‑fatigue resistance, wear resistance and creep‑resistance performance. It can serve stably under harsh conditions such as high‑temperature furnace chamber, corrosive flue gas and particle erosion, acting as indispensable core special tubular material for petrochemical heating furnaces, heat‑treatment equipment, power‑station boilers and metallurgical heavy‑duty industry. Cast Pipe mainly includes two mainstream categories: Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe. Ordinary Centrifugal Cast Pipe is molded under high‑speed centrifugal force with dense structure and few loose defects, widely used for wear‑resistant material‑conveying pipelines, municipal medium transportation and heavy‑duty equipment pipelines under medium‑temperature wear‑prone conditions. Heat‑Resistant Cast Pipe is smelted with chromium‑nickel alloy elements for outstanding high‑temperature strength, applied for cracking furnace radiant tubes, reformer tubes and high‑temperature pressure‑bearing furnace pipelines under operating temperature up to 1000℃. Produced by molten‑steel smelting, mold pouring, high‑speed centrifugal forming, quenching‑tempering heat‑treatment and finishing machining process, Cast Pipe is integrally formed without weld seam. Centrifugal Cast Pipe owns uniform wall thickness with controllable internal shrinkage‑cavity and slag‑inclusion defects for prominent pressure‑bearing and wear‑resistant performance. Heat‑Resistant Cast Pipe features strong high‑temperature oxidation‑resistance and thermal‑cycle‑shock resistance, resisting cracking and deformation under long‑time high‑temperature service. Cast Pipe covers wide specification range. Deep processing services such as machining, beveling, flange welding and non‑destructive inspection are available. Custom non‑standard outer diameter, special wall thickness and special‑shaped bent pipe can be produced. Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe adapt to various engineering projects including petrochemical industry, metallurgy, heat‑treatment, coal‑chemical industry and power equipment. Cast Pipe is irreplaceable industrial special pipe for high‑temperature and wear‑prone working conditions.
1. Material Grade
‑ Domestic Grades: ZG45, LX345, ZG40Cr25Ni20, ZG3Cr24Ni7SiN, Cr26, Cr27, ZG42CrMo, QT500‑7
‑ Export Grades: ASTM A426 Gr.1, ASTM A426 Gr.8, 1.4848, 1.4852, custom alloy grades are acceptable
2. Execution Standards
‑ JG/T 300‑2011 Cast steel pipe for building structures, GB/T 8492 Heat‑resistant steel castings, core national standards for Cast Pipe
‑ International Standards: ASTM A426/A426M, ISO 2531, EN 545, complying with foreign‑trade project acceptance. Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe support full‑set tests including hydrostatic test, UT ultrasonic test, MT magnetic‑particle test, tensile‑impact test and high‑temperature rupture test.
3. Specification Parameters
Cast Pipe outer diameter:60‑1200mm, wall thickness:8‑120mm, standard single‑piece length:1‑6m, multiple‑length, special‑shaped bent pipe and U‑type radiant tube can be customized. Centrifugal Cast Pipe owns stable dimensional tolerance and fine grain structure to meet blanking & construction requirements for material‑conveying and wear‑resistant pipelines. Heat‑Resistant Cast Pipe delivers excellent high‑temperature resistance and thermal‑fatigue resistance for furnace tubes of heating furnaces and reformers, high‑precisionCast Pipe can be delivered in bulk. All Cast Pipe support machining, beveling, flange assembly and full‑range NDT inspection, non‑standard sizes and special‑shaped structural parts can be customized according to customer drawings.
4. Surface Treatment
‑ As‑cast black surface (regular for Cast Pipe): original casting surface with gate‑riser burr removed by grinding, suitable for direct installation & welding inside furnaces.
‑ Fine turning machining: inner‑outer circle precision turning with high dimensional accuracy, widely adopted for equipment assembly pipelines ofCentrifugal Cast Pipe. ‑ Sandblasting treatment: remove surface oxide scale to improve welding performance, applied for prefabrication of high‑temperature furnace tubes of Heat‑Resistant Cast Pipe.
‑ Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe support anti‑rust painting and pipe‑end protection for warehouse storage and sea‑export container loading.
5. Main Applications
Cast Pipe is widely used in petrochemical cracking furnaces, ammonia‑synthesis reformers, heat‑treatment furnaces, power‑station boilers, metallurgical sintering and coal‑powder conveying wear‑resistant pipelines. Centrifugal Cast Pipe is mostly applied for particle‑material conveying pipelines, wear‑resistant slag‑discharge pipes, municipal fluid pipelines and heavy‑duty equipment pressure‑bearing cylinders, bearing material erosion and medium pressure. Heat‑Resistant Cast Pipe serves for furnace radiant tubes, reformer tubes and high‑temperature heat‑exchange pipelines, enduring long‑term high‑temperature environment of 800‑1100℃. Enterprises of petrochemical, metallurgy and heat‑treatment equipment select Cast Pipe according to working temperature, wear and corrosion conditions. Centrifugal Cast Pipe is preferred for wear‑erosion working conditions, and Heat‑Resistant Cast Pipe for high‑temperature furnace‑chamber conditions, giving full play to advantages of Cast Pipe such as high‑temperature resistance, wear resistance, thermal‑fatigue resistance and seamless integral forming.
6. Packing, MOQ & Lead Time
‑ Packing: Pipe ends of Cast Pipe are well‑protected, pipe body wrapped with protective layer and fixed by steel frame, product labels attached, rain‑proof wrapping to avoid pipe‑body collision damage during land transportation and sea‑export container loading.
‑ MOQ: Minimum order 500kg, mixed batch of Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe is available, small‑batch trial orders negotiable.
‑ Lead Time: 15‑25 working days for regular Cast Pipe production; 25‑40 working days for machining, NDT inspection and special‑shape customization. Mill certificates and mechanical‑high‑temperature performance test documents are provided; third‑party SGS inspection is acceptable. Support FOB, CIF, DAP and other international‑trade terms.
7. Product Advantages
Cast Pipe is integrally cast and formed, free of rolling weld seam, avoiding weld‑joint failure under high‑temperature & high‑pressure conditions with high operation safety factor.
Centrifugal Cast Pipe crystallized under centrifugal force with dense microstructure and few blowhole & shrinkage defects, better wear‑resistance and pressure‑bearing performance than ordinary rolled steel pipes.
Heat‑Resistant Cast Pipe adopts high‑chromium‑nickel alloy formula with outstanding high‑temperature oxidation‑resistance, creep‑resistance and thermal‑shock‑resistance for long‑term service under ultra‑high temperature.
Cast Pipe can manufacture large‑wall‑thickness, large‑diameter and special‑shaped bent pipes, overcoming forming limitations of rolled steel pipes for complex non‑standard working‑conditions.
Full‑range Cast Pipe supports complete physical‑chemical and NDT inspection. Centrifugal Cast Pipe and Heat‑Resistant Cast Pipe fully meet procurement standards for domestic industrial projects and global foreign‑trade export.
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