Our pipe world

Dealing with steel pipes is one of our most important business fields. rff customers benefit from the experience we have accumulated over the years in this special field.

Our core skills are in the field of pipes used in pressure applications, for instance in steam boiler and pressure vessel construction, or in pipeline and plant construction. However, we also supply ex-stock line pipes for the oil and gas industry.

Our comprehensive product portfolio covers the complete pressure applications field in accordance with DIN EN or ASME standards for seamless and welded designs using non-alloyed heat-resistant steels, alloyed, low temperature and stainless steels. However, we are also a competent partner for precision steel pipes, threaded pipes, hollow profiles and pipes for mechanical engineering applications. If required, we can supply pipes cut in our own cutting centre, processed to your specifications or coated.

When it comes to pipes, flanges, elbows and butt weld fittings as well as pipe equipment, we ensure strong connections. Welcome to the world of rff.

In this context, please also refer to

Pipes in acc. with DIN EN

Technical standards / type


In acc. with DIN EN

Carbon steel, seamless

10216-1 to 4

Carbon steel, welded

10217-1 to 6

Line pipes

ISO 3183 / 10208-1 to 2

Stainless steel, seamless


Stainless steel, welded


Precision steel pipes

10305-1 to 5 

Dimensions and Wall thicknesses

  • DIN EN 10220 / Carbon Steel
  • DIN EN ISO 1127 / Stainless Steel

Material grades

  • P235TR1/TR2
  • P235GH TC1 / TC2, P265GH TC1 / TC2
  • 16Mo3, 13CrMo4-5, 10CrMo9-1012CrMo19-5
  • P265NL
  • P355NH / NL1
  • L290NE, L360NE
  • 1.4301, 1.4306, 1.4307, 1.4541
  • 1.4401, 1.4404, 1.4571
  • 1.4410 (Superduplex), 1.4410 (Super-Duplex)
  • 1.4529, 1.4539, 1.4547

Cutting and bevelling, blasting, coating and marking for all requirements in accordance with customer specification

Pipes in acc. with ASME / API 5L

Technical standards


In acc. with


Carbon Steel, seamless and welded A/SA53 / 333
Carbon Steel, seamless A/SA106 / 335
Carbon Steel, welded A/SA671 / 672 / 691 
Stainless Steel, seamless and welded A/SA312 / 790
Stainless Steel, seamless A/SA213
Stainless Steel, welded A/SA249 / 358
Pipes for the oil and gas industry API Standard 5L

Dimensions and Wall thicknesses

  • ASME B 36.10   S10 to XXS
  • ASME B 36.19   S5S / S10S / S40S / S80S
  • API Standard 5L

Material grades

  • A/SA 53 Grade B, A/SA 106 Grade B
  • API 5L Grade B
  • A/SA 335 Grade P5, P9, P11, P12, P22, P91
  • A/SA 333 Grade 6
  • API 5L Gr.X52, X60, X65
  • A/SA 312 Grade TP 304/L, 321/H, L, 316/L
  • UNS 32750 (Superduplex)
  • UNS 31803 (Duplex)
  • Special Alloys

Cutting and bevelling, blasting, coating and marking for all requirements in accordance with customer specification.

rff – Strongly connected.