Ni-Hard Wearback Pipes
Abrasion Resistant Cast Iron Pipe
Metallurgically Bonded Composite Pipe For Corrosion & Abrasion Service
Factory supply two types bimetal clad pipe: anti-corrosion lined composite pipe & high chromium wear resistant cast clad pipe, full NDT inspection, comply with API 5LD, ASME, GB standards.
Bimetal clad pipe is a metallurgically bonded composite pipe, fundamentally different from mechanically lined pipe. The outer carbon steel or alloy base carries pressure and impact loads, while the inner corrosion- or wear-resistant alloy liner faces the medium.
This structure resolves the conflict between mechanical strength and chemical resistance, while significantly reducing material cost compared with solid alloy seamless pipe.
We supply two principal product lines:
Corrosion-resistant clad pipe for high-temperature flue gas
and oil & gas service;
High-chromium cast wear-resistant clad pipe for ash,
ore fines and abrasive solid-particle conveying.
| Composite Technology | Core Feature | Main Application Scenario |
|---|---|---|
| Explosion Welding Cladding | Atom-level metallurgical fusion, high bonding strength, comply with API 5LD | Onshore & offshore oil-gas transmission pipelines |
| Hot Roll Diffusion Cladding | Mass continuous production, uniform liner thickness | Power boiler heating surface tubes, chemical heat exchange pipes |
| Vacuum Centrifugal Cast Cladding | High chromium cast iron inner liner, dense wear-resistant layer HRC≥55 | Mining ore slurry, power plant fly ash abrasion pipelines & elbows |
| Outer Base Material | Inner Liner Alloy | Corrosion Working Condition |
|---|---|---|
| 20G / 16Mn / X42-X70 Carbon Alloy | 316L Stainless Steel | General CO₂ weak acid medium |
| A335 P22 / 16Mn | 2205 Duplex Stainless Steel | CO₂ + trace chloride ion medium |
| 20G Boiler Tube | 310S / 17-14CuMo / Sanicro28 | Waste incineration high Cl/S high temperature flue |
| API X60-X70 | C276 / Inconel 625 / Incoloy 825 | H₂S + chloride strong corrosive oil & gas |
| Carbon Steel | Titanium / Cu-Ni Alloy | Seawater desalination pipeline |
Outer layer ordinary carbon steel for pressure bearing, inner liner KMTBCr28 high chromium cast iron with hardness HRC≥55. Perfect for long-term solid particle scouring, customized thickened liner for elbows with severe abrasion.
Oil and gas streams often contain aggressive species such as H₂S, CO₂ and chlorides. Subsea and untreated fields are particularly corrosive, with simultaneous heat transfer accelerating degradation.
Solid corrosion-resistant alloys are cost-prohibitive. Bimetal clad pipe offers an optimal balance: a thin corrosion-resistant inner liner combined with a high-strength carbon or low-alloy steel outer pipe.
| Service Condition | Recommended Liner / Outer Pipe |
|---|---|
| CO₂ Service | 316L austenitic stainless steel liner |
| CO₂ + Chlorides | 2205 / 2507 duplex stainless steel liner |
| Sour Service (H₂S + CO₂ + Cl⁻) |
028, G3, Inconel 625, Inconel 825, titanium alloys |
| Outer Pipe | API 5L X42–X70, ASTM A106, A335-P22 (structural strength) |
Corrosion-resistant liners (Incoloy 825, Incoloy 625) combined with high-strength outer pipes (API 5L grades). Compliant with API 5LD for clad and lined steel pipe.
Superheater and reheater tubes operating at 650°C / 35 MPa. Examples include:
Sanicro 65 alloy outer tubes with carbon or Cr-Mo steel inner tubes. Widely deployed in Europe and North America since the 1970s.
High thermal conductivity with corrosion resistance:
SUS316L outer with Stellite 12 inner liner for pneumatic conveying of abrasive powders. Proven service life exceeding 4 years.
Nickel, titanium or copper alloy liners with carbon steel outer pipes for seawater cooling, desalination and offshore heat exchangers.
Civil: Potable water, HVAC,
solar and geothermal systems.
Industrial: Oil & gas pipelines,
chemical processing, desalination, FGD systems,
pharmaceuticals and food processing.
Metallurgically bonded bimetal clad pipe
Self-propagating High-temperature Synthesis (SHS) process
High-chromium cast iron represents the third generation of white cast irons, developed from conventional Ni-Hard alloys.
Axial fans move air parallel to the shaft axis. They are widely used in ventilation, cooling and industrial exhaust systems where high flow rates at low to medium pressures are required.
(1) Centrifugal casting technology enables the molten steel to solidify and form under the gravity condition, which is dozens of times higher than conventional casting. It solves the problem of loose inside the casting tube billet, has high metal density, and has good discharge and exhaust effect.
(2)The size accuracy of centrifugal cast pipe is high and the wall thickness is even, which provides a favorable guarantee for the size accuracy of subsequent processed products.
(3)Centrifugal casting process has high flexibility for the production of steel pipes of small batch, multiple varieties and specifications, high quality and high value-added steel.
CRA basically means corrosion resistant alloy.
It’s a material that is built for cladding because its main purpose is to enhance a pipe’s resistance to corrosion.
Pipe elbow cladding is the process of applying a cladding material to elbow pipes.
It’s done on a more careful manner than the usual.
This is because elbow pipes can change throughout the entirety of the process.
Particularly, the process of pipe cladding benefits the oil and gas industry the most.
However, it can also be used by other industries such as:
Pipe lining is the process of prolonging the lifespan of pipes.
It can also be used, however, to restore a pipe from natural damages such as:
Pipe lining and pipe cladding are processes that are far from each other.
Lining is the process of mechanically bonding materials to pipes for restoration. Some of the uses of pipe lining include:
Cladding is the procedure of metallurgical bonding of clad materials to pipes. Some of the major uses of pipe cladding include:
There are a lot of companies that utilize state-of-the-art pipe cladding equipment.
We have cutting-edge technology that can complete projects ahead of time.
Some of the most notable features that our pipe cladding equipment have include:
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
