Flange bolting
We supply flange bolting in metric and inch sizes: studs (including DIN 2510), double-end studs, hex bolts, heavy nuts, washers, heat-exchanger plugs and special parts to drawing. Materials include elevated-temperature 42CrMo4 and 21CrMoV5-7 to EN 10269, stainless A2-70 and A4-70, and special alloys such as A286 and Alloy 718. Our bolting complies with PED and AD 2000 and comes with EN 10204 3.1 / 3.2 certificates.
- Sourced direct from manufacturers
- EN 10204 3.1 certificates
- No minimum order quantity
- The complete package in one quote
Material and standards
- Standards
- EN 1515-1 · EN 10269 · DIN 2510 · ISO 3506
- Material grades
- 25CrMo4 · 42CrMo4 · 21CrMoV5-7 · C35E · A2-70 · A4-70
Certification
- Certification
- Inspection certificate to EN 10204 3.1 / 3.2
Overview
- Products: studs (including DIN 2510), double-end studs, hex bolts, heavy nuts, washers, heat-exchanger plugs and special parts to drawing.
- Elevated-temperature materials: 25CrMo4, 42CrMo4, 21CrMoV5-7, X22CrMoV12-1, C35E (EN 10269).
- Stainless: A2-70, A4-70.
- Special: A286, Alloy 718, duplex, Monel.
- Sizes: from small thread sizes to large custom bolts, metric and inch.
- Compliance: PED and AD 2000, with EN 10204 3.1 / 3.2 certificates.
Why bolt material matters
The tightness of a flanged joint depends on its bolting. Bolt material must suit the same temperature as the flange, so elevated-temperature lines need elevated-temperature studs and nuts. Cr-Mo-V bolting steels are typical for turbines and power-plant systems.
What to include in your RFQ:
- thread size and length;
- grade;
- standard;
- nut type;
- surface protection;
- certificate.
Listed items show the typical range; we also quote custom specifications.
Send us your material list – one quote for the complete package (pipe, fittings, flanges, gaskets, bolting), sourced direct from manufacturers, no minimum order.
Request a quote