May we take this opportunity to introduce you to Alliance Valves & Piping Supplies Ltd. We are a leading Purchasing, Supply & Contract Management Company Accredited to the ISO 9001 2000 Quality Standard, within the Oilfield & Petrochemical sector.

We are Agents and Stockholders for Worldwide Manufacturers of Process and Instrumentation Valves, Fittings & Associated Equipment in Duplex, Super Duplex & special alloys.

Our portfolio includes large contract/project management to single item supply of equipment, especially in Duplex, Super Duplex & special alloys, such as:

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  Supplier No: 10050902Valves - Instrumentation; including Ball Valves, Needle Valves, Double Block & Bleed Valves, Monoflanges & Sub-sea Valves etc.
• Valves - Process; including Gate Valves, Globe Valves, Butterfly Valves, Check Valves etc.
• Pipe & Tube;
  • Seamless & Welded
  • Special Forging and castings
  • Rods & Flats in all sizes
• Sheets; Angles, Channels, Beams
• Fittings; (Threaded, Weld Connections and Compression).
• Flanges; 1/2” to 56” in all variations. Full line of Flanges including of Forged, all types: ANSI, API, BS, DIN, MSS, AWWA.
• Nuts and Bolts; Full range of Nuts & Bolts.

Within our capabilities is the facility to supply Machined Products both standard and to Customer Drawings. With worldwide contacts and sources of supply the combination of excellent Pricing, Deliveries, Quality & Customer Service are at a premium.

With the knowledge & experience of the employees the service and technical support we offer are of the highest caliber. We would welcome the opportunity to assist your esteemed Company where you can experience our capabilities for yourself and can assure you of an excellent service always.

To view a small selection of the products we offer please visit our product catalogue.

There are many products not detailed that you may require which we are able to offer. Please call our sales staff on +44 (0) 1484 401880 who will be able to assist.

Duplex

Duplex is an austenitic ferritic Iron Chromium-Nickel alloy with Molybdenim addition. It has good resitance to pitting, a high tensile strength and higher resistance to stress corrosion cracking at moderate temperatures to that of conventional austenitic stainless steels.

Duplex is a material having an approximate equal amount of austenite and ferrite. These combine excellent corrosion resistance with high strength. Mechanical properties are approximately double those of singular austenitic steel and resistance to stress corrosion cracking is superior to type 316 stainless steel in chloride solutions. Duplex material has a ductile / brittle transition at approximately -50°C. High temperature use is usually restricted to a maximum temperature of 300°C for indefinite use due to embrittlement. Read the technical details of Duplex UNS S31803.

Super Duplex

Super Duplex is an austenitic ferritic Iron Chromium-Nickel alloy with Molybdenim addition. It has good resitance to pitting, a high tensile strength and higher resistance to stress corrosion cracking at moderate temperatures to that of conventional austenitic stainless steels.

Super Duplex is a material having an approximate equal amount of austenite and ferrite. These combine excellent corrosion resistance with high strength. Mechanical properties are approximately double those of singular austenitic steel and resistance to stress corrosion cracking is superior to type 316 stainless steel in chloride solutions. Super Duplex material has a ductile / brittle transition at approximately -50°C. High temperature use is usually restricted to a maximum temperature of 300°C for indefinite use due to embrittlement. Read the technical details of Super Duplex UNS S32550, Super Duplex UNS S32750 and Super Duplex UNS S32760.