ISO (International Organization for Standardization) is the world’s largest developer of voluntary International Standards. International Standards give state of the art specifications for products, services and good practice, helping to make industry more efficient and effective. Developed through global consensus, they help to break down barriers to international trade.

ISO 65 / Carbon Steel Tubes Suitable for Screwing in Accordance with ISO 7/1(TS/TW)
ISO 559 / Welded or Seamless Steel Tubes for Water Sewage and Gas (TSO/TWO/TS1/TW1/TS4/TW4/TS9/TW9)
ISO 2604-2 / Steel Products for Pressure Purposes PART2 Wrought Seamless Tubes
(TS1/TS2/TS4/TS5/TS6/TS9/TS9H/TS10/TS13/TS14/TS15)
ISO 2604-3 / Steel Products for Pressure Purpose Parts Electric Resistance and Induction Welded Tubes(TW1/TW2/TW4/TW5/TW6/TW9/TW9H/TW10/TW13/TW14)
ISO 2604-5 / Steel Products for Pressure Purposes PART5 Longitudinally Welded Austenitic stainless Steel Tubes(TW46/TW47/TW50/TW53/TW57/TW58/TW60/TW61/TW69)
ISO 2937 / Plain End Seamless Steel Tubes for Mechanical Application(TS1/TS4/TS9/TS18/C35)
ISO 2938 / Hollow Steel Bars for Machining(Gr1/Gr2)
ISO 3183 / Oil and Natural Fas Industries Steel Line Pipe(E17/E21/E24-1/E24-2)
ISO 3304 / Plain end Seamless Precision Steel Tubes(R28/R33/R37/R42/R50)
ISO 3305 / Plain end Welded Precision Steel Tuves(R28/R33/R37/R44/R50)
ISO 3306 / Plain end as Welded and Sized Precision steel Tubes(R28/R33/R37/R44/R50)

Get in Touch

Welcome to Sunny Steel Enterprise Ltd.

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.

You can get in touch by telephone, post, online or E-mail.

Please check the help section first to see if your question may be answered there.