Ferrules & Blanks

Generally ferrules and blanks are produced by CNC turning from stainless steel bar stock, in 316L material, typicall to ASTM A182, A276 or A479. 

Generall low sulphur grades of stainless steel are offered for good welding characteristics. 

Our standard range of clamp fittings covers sizes from 4mm to 12” (300mm) and encompasses the following internationally recognised standards: 

Standards:

• ASME BPE-2002
• BS 4825 Part 3
• DIN 32676
• 3A Standard
• ISO 2852 and SMS 3017
• ISO 2037
• ISO 1127 Schedule Pipe Size
• SMS 3008
• BS 6362 Schedule Pipe Size

Materials:  A wide range of non-standard material is also available for the ferrules and blanks, in addition to 316L stainless steel, including

• 316L stainless steel – 1.4404
• 316Ti 1.4571 and 1.4435 available to order
• Hastelloy®C
• Titanium
• Nickel Alloys such as Monel 400,
• 6Mo - Materials such as 904L SMO & 254 SMO

• Surface Finish:  The standard internal surface finish for clamp ferrules is 0.8- 1.0mM Ra internally, with enhanced finishes of 0.38 mM Ra or better available on request.  Electro-polishing is also available to order. 

• Certification:  Full material traceability is available to EN 10204 3.1.B, on all clamp ferrules and blanks, while a certificate of conformity is offered for the seals.

• Compatibility:  Where the environment is deemed aggressive to either the seal or the clamp union, please provide details of the media and operating conditions and our technical department will assist you in the selection of the most appropriate material.