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For precision capillary tube of metal materials, we have been working on it for more than 30 years.

Profiled Seamless Tube, Special-Shaped Steel Pipe, Profile Tubes
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Profiled Seamless Tube

  • Overview

    Special-shaped steel pipe refers to the steel pipe with other cross section shapes besides the round pipe, including seamless pipe and welded pipe. According to the different shape and size of steel pipe section, special-shaped steel pipe can be divided into non-circular cross-sectional profile, equal wall thickness, variable wall thickness, variable diameter and wall thickness along the length direction, symmetrical and asymmetric cross-section one.

    The cross-section shape of special-shaped pipe can be divided into outer hexagonal inner circle, outer circle inner hexagonal, inner and outer hexagonal, flat ellipse, ellipse, triangle, octagon, D type, concave type, convex type, P type and so on.

    Special-shaped seamless steel tubes are widely used in various structural parts, tools and mechanical parts in aviation, automobile, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing industries.

    The production process of shaped pipe includes hot rolling, extrusion, cold rolling and cold drawing.

    Compared with the round tube, shaped tube generally has a larger moment of inertia and section modulus, and a larger bending and torsion resistance. It can greatly reduce the weight of the structure, save steel material.

    The important performance index of special-shaped seamless steel pipe is plasticity, hardness, fatigue strength, impact toughness, tensile strength (tensile, compression, bending, shear), etc., in special application environment, it is also required to have excellent high temperature resistance, corrosion resistance, wear resistance and other properties.
  • Stainless steel Ni and Ni alloys

    TP304 / TP304L

    TP316 / TP316L
    TP321 (S32100)
    TP410 / TP430 / TP446
    TP409 / S44400
    N02200 / N02201
    UNS N04400
    UNS N06600 / N06625
    UNS N08800 / N08810
    UNS N08825

  • Carbon steel Alloy steel

    Q235, SS400

    AISI 1010, 1020, 1045
    S355J2, 16Mn, 27SiMn
    20Cr、40Cr
    16MnCr5, 20MnCr5
    15CrMo, 35CrMo, 42CrMo
    AISI 4130, 4140
    AISI 4330, 4340
    AISI 8620

  • Stainless steel, Nickel and nickel alloys precision shaped tube

    Relying on advanced extrusion, finishing rolling, oil drawing and other equipment, the company can produce small size, high precision, excellent performance and different precise shaped seamless tubes according to different requirements of customers.

    According to the different application environment, we can provide materials including austenitic stainless steel, such as TP304/304L, TP316/316L, TP321, ferritic stainless steel and martensitic stainless steel, such as TP410, TP430, TP446, TP409, S44400, pure nickel materials such as N02200, N02201, nickel alloys such as UNS N04400, N06600, N06625, N08800, N08810, N08825, etc.

    Our products have reached the advanced level in wall thickness control, dimensional tolerance, surface roughness, straightness and heat treatment.

    At present, our products have been widely used in muffler, electric heating tube, high temperature tube, air conditioning, refrigerator, petrochemical, bellows, electronics, semiconductor and other industries, such as mobile phone USB interface for flat oval tube, semiconductor packaging precision square tube, electronic pen precision rectangular tube and so on.


    Square tube / Rectangular tube
    Elliptical tube / Flat elliptical tube
    Side length: 4.0 ~ 300mm
    WT: 0.15 ~ 30.0mm
    Length:≤10.0 m


    Triangle tube / Hexagonal tube
    Octagonal tube / Multi-angle tube
    Size length: 4.0 ~ 300mm
    WT: 0.15 ~ 30.0mm
    Length:≤10.0 m

    D shape tube / Trapezoidal tube
    Outside round inside shaped tube
    Inside round outside shaped tube
    1. Customize according to drawing
    2. Customize according to sample


  • Carbon steel, alloy steel profiled seamless tube

    The manufacturer has a history of 15 years, with hot perforation, hot rolling, cold drawing, cold rolling, mechanical processing four branches, excellent production and testing equipment, deep technical force, perfect process.

    Our annual output is more than 40,000 tons.

    The steel pipe R&D and testing center of the manufacturer can provide customers with 200+ product design and solutions.

    Process: Hot piercing  → Picklng → Intermediate heat treatment → Hot rolling → Cold rolling → Annealing → NDT → Finishing → Testing and inspection → Packing

    OD: 10 ~ 120 mm 
    WT: 1.2 ~ 20 mm

    Application: Automobile parts, geological exploration, rock drill, agricultural machinery drive shaft, household appliances, bearing industry, chain industry, heating pipe, etc.

    Market: More than 60% exports to Europe, South Korea, Japan, the Middle East, South America, Southeast Asia, Russia and other countries and regions.

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