Special Shaped Alloy Tubes

Precision Seamless

Special Shaped Alloy Steel Tubes are precision-engineered seamless tubes with non-circular cross-sections, designed to meet demanding industrial requirements where standard round tubes fall short.

Special Shaped Alloy Steel Tubes Cold Drawn Special Shaped Seamless Tubes Precision Alloy Custom Profiles Hexagonal Alloy Steel Tubes +2 More

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Special Shaped Alloy Tubes

Precision Seamless

Special Shaped Alloy Steel Tubes are precision-engineered seamless tubes with non-circular cross-sections, designed to meet demanding industrial requirements where standard round tubes fall short.

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Precision-engineered seamless special shaped alloy steel tubes with custom cross-sections for demanding industrial applications. These tubes offer tailored material composition, mechanical properties, dimensional accuracy (±0.1mm tolerance), and complex geometries. Small-batch production is supported with full customization, value-added machining, and compliance to international standards (ASTM, EN, DIN, JIS, GOST). Produced via cold drawing and cold rolling for superior surface finish, uniformity, and performance.

Available Shapes & Profiles

Common Shapes

Hexagonal
Square
Rectangular
Oval

Specialty Shapes

D-shaped
Lemon-shaped
Triangular
Complex custom profiles (per CAD/drawing)

Key Features

Full customization of cross-section geometry; seamless construction; high precision for structural, load-bearing, and assembly applications.

Size Range

Parameter	Range	Notes
Outer Dimension (equivalent OD)	10–108 mm (0.39"–4.25")	Fully customizable
Wall Thickness	1–20 mm (0.039"–0.79")	±0.1 mm precision tolerance; excellent uniformity
Length	Custom	Per customer requirement
Tolerance (ID/OD in select apps)	±0.05 mm	e.g., construction machinery
Straightness	≤0.5 mm/m	High precision applications

Material Grades

16Mn, Q345B(Q355B), Q345C(Q355C), Q345D(Q355D), Q345E(Q355E), Q420, Q460, 20Cr, 40Cr, 15CrMo, 20CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrNiMo, 40CrNiMo, 20CrMnTi, 20Mn2, 40Mn2, 40MnB, 35MnB, 35Mn15CrMn, 20CrMn, 20CrMnMo, 38CrMoAL, 36Mn2V, 38Mn2V, 40MnMoV, 15Mo3, 16Mo3, 31CrMoV9

Gr.50, Gr.55, Gr.65, 5120, 5140, 4130, 4135, 4140, 8620, 4340, SAE 5120, 1524, 1340, 15B41, SAE5115, SCM23

E355, ST52, S355JR, S355JO, S355J2, S355NL, S420N, S420NL, S460NL, 20Cr4, 41Cr4, 13CrMo4-5, 20CrMo4, 25CrMo4, 34CrMo4, 42CrMo4, 20NiCrMo2, 34CrNiMo6, 20MnCr5, 22Mn6, 42Mn6, 42MnB4, 34MnB5, 37Mn5, 16MnCr5, 20CrMo5

Over 100 grades available; full customization of chemistry and properties (yield strength 350–1200 MPa possible).

Special Shaped Alloy Tubes

Applications & Industries

Special Shaped Alloy Steel Tubes excel in diverse sectors:

Automotive & motorcycle components
Shock absorbers, steering systems, thrust rods and lightweight structural frames.
Construction & mining machinery
Drive shaft sleeves, crane booms, excavator arms and hydraulic support props.
High-pressure boiler systems
Superheaters, reheaters, economizers and high-temperature steam pipelines.
Agricultural machinery
Hydraulic cylinders, lift arms, boom structures and load-bearing frames.
Petroleum & chemical processing
Reformer tubes, heat exchanger components and quench piping systems.
General structural applications
Precision frames, material conveyors and geological drilling tools.

Why Choose ZG35Cr24Ni7SiN?

ZG35Cr24Ni7SiN is a high-performance heat-resistant cast alloy engineered for extreme thermal environments. It offers exceptional durability, oxidation resistance, and cost efficiency—making it the smart choice for demanding high-temperature applications.

Extended Service Life at High Temperatures

Designed for continuous operation up to 1050°C, ZG35Cr24Ni7SiN maintains structural stability and mechanical strength even under prolonged thermal exposure.

Excellent Oxidation & Scaling Resistance

High chromium and silicon content form a dense, protective oxide layer that significantly reduces metal loss and extends maintenance intervals.

Stronger at Temperature, Not Just at Room Conditions

Nitrogen alloying dramatically improves creep resistance and high-temperature strength, outperforming conventional Cr–Ni cast steels during long-term service.

Cost-Effective Alternative to High-Nickel Alloys

Delivers performance comparable to high-Ni grades like ZG40Cr25Ni20 in many applications—at a significantly lower alloy cost.

Ideal for Complex Cast Components

Superior castability enables production of large, intricate one-piece components—reducing welds, joints, and potential failure points.

Material Comparison

Selecting the right wear material is critical for service life and operating cost. Below is a practical comparison of common wear-resistant materials.

Material	Typical Hardness	Wear Resistance	Impact Resistance	Service Temperature	Cost Level	Typical Applications
KmTBCr26	HRC 58–65	★★★★★	★★	≤ 500°C	★★★	Severe abrasion liners, chutes, wear plates, mining & cement equipment
Ni-Hard (Ni-Hard 4)	HRC 55–60	★★★★	★★★	≤ 400°C	★★★	Impact + abrasion parts, mill liners, crusher components
Cr20 Cast Iron	HRC 50–58	★★★☆	★★☆	≤ 450°C	★★	Medium abrasion conditions, general wear parts
Hardfacing Overlay	HRC 55–62	★★★★☆	★★★	≤ 600°C*	★★★★	Local wear protection, repair and reinforcement

Engineering Tip: KmTBCr26 is recommended when abrasion is the dominant wear mechanism and maximum service life is required. For high impact or on-site repair, Ni-Hard or hardfacing solutions may be more suitable.