Contact Platform Support
Help CenterSteel Pipe & Tube & Cast Steel Pipe，ZG230-450、ZG270-500、ZG310-570、ZG15CrMo、ZG35CrMo、CP5、K9、K10、K12
Related Products
-
Steel Coil & Strip & Hot Rolled Coil，SPHC、Q235B、SS400、A36NegotiableMOQ: 5 Metric Tons -
Steel Coil & Strip & Cold Rolled Steel Coil，SPCC、DC01、Q195、Q235、DC03、DC04、DC05、SPCD、SPCE、Q345、HC340LA、HC420LANegotiableMOQ: 5 Metric Tons
-
Steel Coil & Strip & Prepainted Steel Coil，DX51D+Z、DX51D+AZ、TDC51D、DX52D、DX53D、DX54D、TS250GD、TS350GDNegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Pressure Vessel Steel Plate，SA516Gr60/65/70、SA387Gr11/12/22/5、SA203A/E、P265GH、P355GH、13CrMo44、16Mo3NegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Checkered Steel Plate，Q235B、Q195、1060、5052、5754NegotiableMOQ: 5 Metric Tons
1. Product Overview
Casting tubes are mainly manufactured by centrifugal casting process, including cast steel tubes and ductile iron tubes. Raw materials are carbon cast steel, low-alloy cast steel and ductile iron, without stainless steel. Formed by centrifugal force, the tubes feature dense metallographic structure, uniform wall thickness, excellent pressure and wear resistance. Custom large-diameter and extra-thick wall special pipes can be produced, widely used as core pressure-resistant & wear-resistant pipes in metallurgy, petrochemical, power plant, municipal engineering and mining industries under high temperature, high pressure and severe abrasion working conditions.
Application Scenarios
High-temperature radiant tubes for power plants, boiler header pipes, convection tubes for petrochemical heating furnaces, furnace rollers for metallurgical industry, wear-resistant slurry transportation pipelines for mines, ductile iron pipes for municipal water supply & drainage, coal powder conveying pipes for cement plants, pipeline for heat treatment furnaces, high-pressure process pipes for chemical fertilizer plants, wear-resistant pipelines for sewage treatment.
Delivery Lead Time
Standard spot specifications can be delivered within 5-7 days; customized products of large diameter, extra thick wall, alloy material and special shape take 10-15 days, shipped in full containers from Tianjin Port.
2. Executive Standards & Common Grades
Domestic Standards
GB/T 8492 Centrifugal Cast Steel Tubes, GB/T 13295 Ductile Iron Pipes for Water & Gas, GB/T 11352 General Engineering Cast Carbon Steel Parts
International Standards
ASTM A426, ISO 2531, EN 545, EN 598
Common Grades (Carbon/Low Alloy Cast Steel, Ductile Iron)
Carbon cast steel: ZG230-450, ZG270-500, ZG310-570
Low alloy heat-resistant cast steel: ZG15CrMo, ZG35CrMo, CP5
Ductile iron: K9, K10, K12
3. Specifications
Inner Diameter: DN50mm ~ DN2000mm
Wall Thickness: 6mm ~ 120mm, extra thick wall customized available
Standard Single Length: 2m, 3m, 6m, 8m, custom length acceptable
Pipe End: Plain ends, integrally cast flanges, T-type spigot & socket joints, beveled welding ends
Molding Technology: Horizontal centrifugal casting, vertical centrifugal casting, sand mold integral casting
4. Manufacturing Process
Molten steel/iron smelting → refining composition adjustment → mold closing → high-speed centrifugal pouring → slow cooling demolding → high temperature annealing / normalizing & tempering heat treatment → outer wall shot blasting, inner wall grinding → dimension calibration → non-destructive testing → hydrostatic pressure test → marking, anti-rust treatment & packingCentrifugal molding eliminates internal porosity and shrinkage defects; heat treatment removes casting internal stress to improve toughness and high-temperature stability.
5. Core Performance Advantages
Uniform & dense wall: Centrifugal force forms compact metal matrix without looseness or holes, higher pressure resistance than ordinary welded pipes
Outstanding wear resistance: High matrix hardness, resistant to erosion by slurry, coal powder and ash slag, long service life
High temperature creep resistance: Low alloy cast steel can stably operate at 550-650℃ for long term, free from deformation and cracking under high temperature
Flexible large-diameter customization: Able to produce super large-diameter and extra-thick wall pipes which can not be manufactured by common seamless pipes
Integral forming: Flanges and sockets can be cast integrally, reducing secondary welding procedures
6. Full Inspection for Each Tube
Spectral chemical composition test during smelting to strictly control carbon, chromium, molybdenum alloy elements
Mechanical property tests: tensile, hardness, high-temperature impact and stress rupture test
Metallographic inspection to check casting defects such as looseness, slag inclusion and oversized grain
UT ultrasonic & MT magnetic particle NDT to detect internal cracks and shrinkage cavities
Hydrostatic tightness test for every single tube, test pressure reaches 1.5 times of working pressure without leakage
Precision measurement of inner/outer diameter, wall thickness and lengthFull documents supplied: chemical analysis report, NDT report, hydrostatic test certificate and original quality guarantee certificate.
Quality Warranty
Full return and replacement for defective products caused by casting porosity, insufficient wall thickness and unqualified material.
7. Surface Treatment & Packing
Surface finish: Shot blasting rust removal for outer wall, oxide scale grinding for inner wall; municipal cast pipes coated with bitumen outside and cement mortar lining inside; industrial casting tubes painted with black anti-rust paint
Anti-rust treatment: Both pipe ends coated with anti-rust oil and covered by plastic protective plugs
Packing: Bundled with steel strips, wrapped by waterproof tarpaulin to avoid collision, moisture and rust during sea transportation in containers.
Send Inquiry to This Supplier
You May Also Like
-
Steel Sheet & Plate & Shipbuilding Steel Plate，CCS、ABS、DNV、BV、LR、NK、KR、RINANegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Boiler Steel Plate，ASME SA516、SA387、EN P265GH、P355GH、16Mo3、13CrMo44NegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Steel Sheet Pile，S235GP、S355GP、SY295、SY390、S390GP、KW420NegotiableMOQ: 5 Metric Tons
-
Steel Rebar & Deformed Steel Bar / Rebar，Φ6mm、Φ8、Φ10、Φ12、Φ14、Φ16、Φ18、Φ20、Φ22、Φ25、Φ28、Φ32、Φ40、Φ50mmNegotiableMOQ: 5 Metric Tons
-
Steel Wire & Carbon Steel Wire，Q195、Q235、45#、50# 、65#、70#、82B、65Mn、50CrVA、60Si2MnANegotiableMOQ: 5 Metric Tons
-
Flat Steel & Flat Bar，Q235B: Carbon Flat Steel、Q355B: Alloy Flat Steel、65Mn: Spring Flat SteelNegotiableMOQ: 5 Metric Tons
-
Steel Angle & Angle Bar，Q235B / SS400 / ASTM A36 / S235JR、Q355B/C/D / S355JR / A572 Gr50NegotiableMOQ: 5 Metric Tons
-
Steel H Beam & H Section Steel，Q235B / S235JR / ASTM A36、Q355B/C/D/ S355JR / A572 Gr50NegotiableMOQ: 5 Metric Tons
-
Steel Pipe & Tube & HDG Galvanized Steel Pipe，ASTM A53 Gr.A/B、EN 10255、BS1387、JIS G3452、ISO65NegotiableMOQ: 5 Metric Tons
-
Steel Pipe & Tube & Alloy Steel Pipe，P5/P9/P11/P22/P91、T11/T22/T91NegotiableMOQ: 5 Metric Tons
