High chromium white cast iron is premium wear-resistant cast alloy, manufactured into integral cast elbows, straight pipes and tees, solving frequent pipeline abrasion replacement under heavy scouring working conditions.
High chromium white cast iron is a professional wear-resistant cast alloy widely applied in abrasive industrial pipeline systems, divided into mainstream grades Cr15Mo3, Cr20Mo and Cr27Mo. Unlike ordinary gray cast iron or carbon steel, its internal structure forms hard M7C3 chromium carbide crystalline phase after heat treatment, which delivers far superior anti-scouring and anti-impact abrasion capacity.
All pipeline parts made from high chromium white cast iron are integrally cast as one piece, without composite lining shedding risks that exist in lined steel pipes. It perfectly fits severe working scenarios including thermal power plant ash removal pipelines, mineral tailing slurry conveying, coal washing slag delivery and cement raw material transportation, where pipe elbows and straight sections bear continuous high-speed particle impact.
Traditional carbon steel elbows wear through within 1–3 months under heavy slurry scouring, while high chromium white cast iron fittings extend service cycle to 2–5 years, drastically cutting down pipeline shutdown maintenance frequency and overall operating cost for factories.
Compared with manganese steel, basalt lined pipe and common alloy castings, high chromium white cast iron owns balanced abrasion, structural strength and cost advantages:
Three mainstream industrial grades comply with domestic GB/T 8263 and international casting standards, with controlled trace elements to balance hardness and casting toughness:
| Grade | C (%) | Cr (%) | Mo (%) | Mn (%) | Si (%) | S / P Max (%) |
|---|---|---|---|---|---|---|
| Cr15Mo3 | 2.0–3.0 | 14.0–16.0 | 2.5–3.0 | 0.6–1.2 | 0.4–1.0 | ≤0.06 |
| Cr20Mo | 2.2–3.2 | 19.0–21.0 | 1.0–1.8 | 0.6–1.2 | 0.4–1.0 | ≤0.06 |
| Cr27Mo | 2.4–3.4 | 25.0–29.0 | 0.8–1.5 | 0.6–1.2 | 0.4–1.0 | ≤0.06 |
Grade Selection Guide: Cr15Mo3 for medium abrasion power plant ash lines; Cr20Mo for coal washing and moderate corrosive slurry; Cr27Mo for heavy abrasion mining tailings and high-temperature slag pipelines.
Every cast pipe fitting follows standardized smelting, casting and heat treatment procedures to guarantee uniform hardness and zero internal casting defects:
We supply full-size cast pipe series covering common industrial nominal diameters, all bending angles and bending radii for pipeline turning sections:
| Nominal Diameter DN | Outer Diameter mm | Cast Wall Thickness mm | Available Bend Angles | Standard Bend Radius |
|---|---|---|---|---|
| DN65 – DN150 | 76 – 168 | 12 – 18 | 30° / 45° / 60° / 90° | R=1.5D / R=2D |
| DN200 – DN350 | 219 – 377 | 15 – 22 | 30° / 45° / 60° / 90° | R=2D / R=2.5D |
| DN400 – DN600 | 426 – 630 | 18 – 28 | 30° / 45° / 60° / 90° | R=2.5D / R=3D |
Special requirements including non-standard diameters, 15°/120° special bends and extra thick wall casting can be fully customized based on client drawings and working condition parameters.
Our cast iron pipeline fittings support all mainstream industrial pipeline connection forms to match different pressure and installation environments:
All connection ends retain full high chromium cast iron wear layer, avoiding local rapid abrasion at pipe joints that shortens overall pipeline service life.
We provide a complete set of integral cast wear-resistant pipeline parts to realize full-line anti-abrasion protection for conveying systems without mixed material mismatches:
| Product Name | Size Coverage | Installation Position |
|---|---|---|
| High Chromium Cast Straight Pipe | DN65 – DN600 | Linear straight pipeline sections |
| Cast Iron Bend / Elbow | 30° ~ 90° standard angles | Pipeline turning & diversion sections |
| Cast Equal / Reducing Tee | DN65 – DN400 | Pipeline branch split points |
| Cast Concentric Reducer | Custom diameter difference | Pipeline variable diameter transition positions |
High chromium white cast iron fittings target industrial pipelines with persistent solid particle abrasion and mild corrosive medium, covering six major heavy industry sectors:
We compare core service indicators of high chromium white cast iron against traditional wear-resistant pipe materials for intuitive selection reference:
| Pipe Material Type | Abrasion Resistance | Maximum Working Temp | Risk of Failure | Comprehensive Cost Performance |
|---|---|---|---|---|
| Ordinary Carbon Steel Pipe | Very Poor | 400°C | Fast perforation, frequent replacement | Low initial cost, high maintenance cost |
| Mn13 Manganese Steel Cast Pipe | Medium | 300°C | Wears fast under continuous scouring | Medium |
| Cast Basalt Lined Steel Pipe | Excellent | 350°C | Lining peeling under heavy impact | Medium-high |
| High Chromium White Cast Iron | Excellent | 320°C | Integral casting, no lining shedding risk | Highest long-term value |
High chromium white cast iron fittings feature convenient installation and low maintenance threshold; following standard operation rules extends overall pipeline service life significantly:
During hoisting and installation, avoid violent knocking and heavy impact on casting body to prevent micro cracks inside the casting structure. Align the medium flow direction with the elbow bending radian to reduce particle direct impact on pipe inner wall.
Regularly inspect flange sealing surfaces and welding joints for leakage every 3 months. Do not operate beyond rated pressure and temperature range marked on product surface. Minor surface abrasion or small crack defects can be repaired with special wear-resistant cast iron repair welding rods without replacing the whole fitting.
Our high chromium white cast iron pipeline fittings adopt targeted structural optimization design based on actual abrasion law of industrial conveying medium:
The inner wall radian of cast elbows uses streamlined transition design to reduce medium turbulence and direct particle impact force, lowering local concentrated abrasion at turning points. Uniform wall thickness casting eliminates thin-wall weak areas prone to premature perforation.
For heavy impact mining slurry working conditions, we add local thickening casting on the inner impact surface of elbows to strengthen core wear positions, balancing casting weight and service cycle effectively.
Every batch of high chromium white cast iron castings undergoes multi-dimensional inspection before delivery, complying with GB/T 8263 wear-resistant casting industry standards:
We provide fully personalized customized high chromium white cast iron pipe fittings according to client site working condition parameters, medium characteristics and pipeline layout drawings:
Our technical team can adjust casting wall thickness, select Cr15Mo3/Cr20Mo/Cr27Mo grade, customize non-standard bending radians, special flanges and large-diameter super thick cast pipes. Complex special-shaped diversion cast fittings for unique equipment interfaces are also available.
Additional supporting services include on-site pipeline measurement, installation technical guidance, post-delivery wear failure analysis and long-term spare parts supply plan for project owners.
High chromium cast iron castings adopt professional shock-absorbing packaging to avoid collision cracks during sea and land long-distance transit:
Small and medium DN cast elbows and straight pipes are packed into solid export wooden cases with foam buffer filling at both pipe ends. Large-diameter DN400+ cast pipes are fixed with steel binding strips and equipped with plastic protective sleeves for pipe orifice wear prevention.
We support FOB/CIF/CFR international trade terms, matching sea freight, land truck and air express delivery per client schedule. Complete documents including factory test reports, material certificates and installation manuals are attached inside each shipment container for customs clearance and on-site acceptance.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
A half pipe sleeve is a piping device, which is placed on a pipe to protect it against the aliments.
Read moreSnap rings are used in conjunction with boiler tubes erosion shields, which is a clip that easily installs boiler tubes erosion shields to the tube.
Read moreA stainless boiler tube shield is a piping device, which is placed on a pipe to protect it against the aliments.
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.
