W. Maass (UK) Ltd - Pipe Flanges and Pipeline Equipment

W. Maass (UK) is a manufacturer of pipe flanges and pipeline equipment serving the needs of the oil, petrochemical and process related industries. Based in St. Helens, production is concentrated on subsea components in CRA materials suitable for use in harsh environments, such as the UK continental shelf.

Manufactured components include:

• Pipe flanges
• Swivel ring flanges
• Bulkheads - pipe-in-pipe / bundle
• Anchor flanges
• Manifold blocks / special fittings
• Tubesheets

Materials include all grades of stainless steel, duplex, super duplex, six Moly nickel alloys, titanium, high yield carbon steel and CRA overlay.

Experienced sales engineers are familiar with the latest material technology and specifications demanded by the oil and petrochemical industries. W. Maass (UK) Ltd are well-respected manufacturers, whose customers recognise their ability in producing special products, very often for fast track project requirements. Design and product development is aided by Pro Engineer in-house software.

Swivel ring flanges

W. Maass (UK) Ltd have designed a standard range of ASME/ANSI swivel ring pipe flanges. The flanges are suitable for connecting to regular commodity items and/or can be modified to suit clients’ specific design conditions.

Project experience lists of successful supply contracts can be provided on application. Historic projects completed include:

Britannia field project, UK, North Sea

W. Maass manufactured subsea manifold blocks in duplex stainless steel for the Britannia project. A total of 28 blocks were supplied with a finished weight of 720Kg each. The company were awarded a quality initiative award on this project.

PS3 and PS2 project, Q.G.P.C.

W. Maass produced hydrocyclone reject plates in duplex stainless. A total of 12 reject and support plates were supplied as internal components for a De-oiling Hydrocyclone Package.

Eastern trough area project development, UK, North Sea

W. Maass were responsible for the design, manufacture and supply of subsea pipeline flanges and pipe-in-pipe bulkheads, in high yield carbon steel, super duplex and Alloy 625 CRA overlay. The company provided fast-track supply for this high pressure, high temperature development. The total value of the order was in excess of £1.5 million.

Tern/Eider water injection pipeline, UK, North Sea

A 16.3/4in X 7.1/16in API 5000 PSI flanged reducing cross outlet was designed and manufactured in high yield carbon steel with Alloy 625 CRA overlay internals. Approximate finished weight 3,600kg.

Shell Gannet E & F project, UK, North Sea

High yield carbon steel end and intermediate bulkheads were supplied in ASTM A694 F65 material for use in pipeline bundle fabrication.

Facilities

Facilities include a 40,000ft² machine shop, incorporating conventional, NC and CNC equipment together with a 22,000ft² stockholding/distribution centre.

Quality

W. Maass (UK) Ltd operate a Quality Management System which is fully approved to BS EN ISO 9001 by Lloyd's Register Quality Assurance. Original approval was appointed in 1992 and has been continually updated. In-house quality testing includes for positive material identification, ferrite checking, dye penetrant testing, ultrasonic testing and magnetic particle examination.

Current projects

W. Maass (UK) Ltd is currently involved in supplying the following projects:

• Sabah - Sarawak Gas Pipeline - design and supply of 36in NB pipeline anchor flanges
• Drilling riser for UK North Sea offshore project - manufacture of special 20in NB riser flanges in ASTM A182 F22 / CRA Clad
• Petro SA F.O. Development Project - package supply of subsea pipe flanges, pipes, butt weld fittings, bolting and gaskets in duplex stainless steel and CRA clad carbon steel
• BP Chirag COP - supply of super duplex stainless-steel flanges
• Chevron and Jack St Marlo Project - supply of duplex stainless-steel pipe flanges and nozzles
• Shell - Corrib Field Development - supply of duplex stainless-steel pipes
• BP Angola Block 31 PSVM Project - supply of special moonpool hang off collar