E-mail : inquiry@ronsteel.comPhone : +8615308477503


We are committed to providing one-stop service for steel pipe products to customers around the world.

Stainless steel pipe & fittings
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  • Seamless Stainless Steel Pipe

    Seamless stainless steel pipe is the tube made from stainless steel bar perforated and then cold rolled or cold drawn.

    ASTM A312, A269, A213, A790

    Grades: 304/L, 316/L

    Duplex 2205, 2507 etc

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  • Welded Stainless Steel Pipe

    Welded stainless steel pipe is manufactured from stainless steel strip–formed and longitudinally welded to completed pipe.

    ASTM A312, A358, A249, A554, A790

    Grades: 304/L, 316/L, 347/L,904/L etc

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  • Stainless Steel Bar

    Stainless steel bars are commonly used in construction and finishing materials, and are used for a variety of structural and aesthetic purposes.

    15-5, 17-4,

    303, 304, 316, 410 and 416

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  • Nickel Alloy Pipe

    Nickel alloy pipe is made up of a chemical composition of nickel, manganese, carbon, silicon, sulfur, ferrous, and copper.

    UNS N04400, N06600, N06625, N07718, N08825

    N08800 / N08810 / N08811

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  • Stainless Steel Fittings

    We can offer stainless steel pipe fittings according to ASME, EN, ISO and DIN standards.

    1/2” to 24” seamless type SCH 5S to XXS

    2” to 48” welded type SCH 5S to XXS

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  • CNC Machining Services

    Precision machined part materials include carbon steel, mild steel, aluminum, stainless steel, tool steel, copper and brass.

    Turning: 2-axis CNC lathes, Swiss-type lathes

    Milling: 3-, 4- and 5-axis CNC machines

    Drilling: Upright, bench, radial drill presses

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  • Forging

    Forging is a manufacturing process carbon steel pipe for shaping metal.

    Carbon Steels, Alloyed Steels

    Stainless Steels, High-Alloy Steels

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  • Stainless Steel Plate & Sheet

    Our stainless steel sheets come in grades and sizes to suit your applications.

    201, 202, 410, 410S

    304, 316, 420, 430

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Offers a Wide Range of Material and Specifications

Our real-time inventory management, full mill documentation and continuous quality control make your project procurements smoother and more cost-effective.
Covering stainless steel, alloy steel and carbon steel in plate, sheet, pipe, bar and flanges.

◎ Over 2000 tons of 304 and 316L stainless steel pipe inventory
◎ Seamless pipe & products to 32″ OD. Welded pipe and products to 48″ OD.
◎ Offering all scheduled walls & unscheduled, heavy wall products
◎ Materials inventoried to: ASTM, ASME, NACE, DIN, AISI, EN specifications
◎ Emergency weekend and after hour services +8615308477503
◎ Supplemental testing services
◎ Custom Surfaces
◎ Machining and cutting
◎ Packaging and shipping around the corner or around the globe

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  • DetailsProduction

      Production of steel pipe is generally grouped into two categories:

      (1) Welded and Seamless

      There are many methods of producing steel pipe in current use, however, most of the pipe produced in the worldwild is made either by the seamless, electric resistance weld (ERW) or spiral weld methods.

      Continuous weld and double submerged arc weld are other common methods of manufacture.

      Have a Question? Click here to contact our team.

  • DetailsPipe Sizes

      Ronsco provides a pipe chart for sizes of steel pipe 1/8” nominal to 48” Outside Diameter that illustrates nominal Pipe Size and Scheduled Walls as compared to actual outside diameter, wall thickness and weight/ft.

      The left side of the pipe chart indicates the difference between the nominal and actual size.

      Nominal sizes 1/8” through 12” are different from the actual outside diameter sizes (much like a 2 x 4 is not really 2 inches by 4inches).

      In sizes greater than 14”, the nominal size is the same as the measured O.D. size.

      Have a Question? Click here to contact our team.

  • DetailsWall Thickness
      While many other wall thickness can be manufactured by a mill somewhere in the world, any thickness that is not on the pipe chart is considered an “Unscheduled Wall” and would normally be available by special order.
      We have extensive experience in providing machining services to achieve exact wall thickness tolerances or to meet minimum ID/OD requirements.
      As the engineering designs become more involved and the end use more critical the demand has increased for material with a guaranteed “minimum wall thickness”.
      Generally on 24” O.D. pipe and under, manufacturer tolerances are stated as -12.5% the nominal wall thickness.
      Therefore, minimum wall thickness can usually be calculated as 12.5% under the average or nominal wall thickness.
      For example, 2.500” nominal wall would approximate 2.188” min wall.
      Depending on the application, Tubing specifications normally have much tighter wall tolerances then Pipe specifications.

      Pipe can also be machined to achieve more exact wall thicknesses or minimum ID requirements.

  • DetailsHave a Question?