ISO/EN seamless stainless steel tubes

ISO/EN seamless stainless steel tubes is manufactured according to ISO/EN standards, which also includes a wide range of sizes in duplex and super-duplex stainless steels grades.

ISOEN seamless stainless steel tubes
ISO/EN seamless stainless steel tubes

1) Standard
EN/ISO seamless stainless steel tubing is available according to below standards, also customer’s requirements.
– EN 10216-5 TC1 / TC2
– EN 10297-2
– PED 97/23/EC, AD 2000

2)  Steel Grades
Austenitic stainless steel grades: 1.4301/1.4307, 1.4401/1.4404, 1.4541/1.4878, 1.4571, 1.4948
Duplex / super duplex stainless steel grades: 1.4462, 1.4410, 1.4539

3)  Delivery condition
Seamless stainless steel tubes mainly are delivered in below conditions:
– Bright annealed,
– Solution annealed and pickled,
– Annealed and Polished

4)  Size Range
Ruimai can produce seamless stainless steel tubes in a wide size range as below:
Outer Diameter: 3 mm to 508 mm;
Wall thickness: 0.5 mm – 40 mm

5)   Tolerances
EN/ISO seamless stainless steel tubing usually is following the below requirements and the customer’s requests.

Tolerances according to EN ISO 1127
Condition Outside diameter Wall thickness
Cold-worked +/-0.75%, but min. +/-10%, but min.
Cold-worked +/- 0.3 mm (D3) +/- 0.2 mm (T3)
Cold-worked +/- 0.5% (D4) +/- 7.5% (T4)

EN/ISO Standard seamless stainless steel tubes are supplied as:

Stainless steel heat exchanger tubes

Stainless Steel Hydraulic Tubing

Stainless steel instrument tubing

Stainless steel boiler tubes

Line pipes / Flowline pipe

Stainless steel precision tubes

High temperature tubes /Furnace tubes

Duplex /super duplex steel pipes

Seamless Coiled tubes

Stainless steel capillary tubes

Stainless steel bright annealed tube

Stainless steel U-bend pipes





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