PIPING MATERIALS Clause Samples

The Piping Materials clause defines the types, grades, and specifications of materials that must be used for all piping work in a project. It typically outlines requirements for material quality, compliance with industry standards, and may specify approved manufacturers or testing procedures. By setting clear expectations for the materials to be used, this clause ensures the safety, durability, and regulatory compliance of the piping systems, thereby reducing the risk of failures or disputes over material suitability.
PIPING MATERIALS. All pipe-work shall be designed, fabricated and tested according to the requirements of the approved standard with the consent of the Purchaser incorporating any other features as required by this Technical Specifications. The material of the piping shall be equal to or better than the following technical requirements. For design metal temperature up to and including 750°F, carbon steel (including plate material) shall be used. For design metal temperature between 750°F and 990°F, Type P22 alloy steel shall be used. For design metal temperature above 990°F, Type P91 alloy steel shall be used. The outside of the embedded pipes shall be protected by coatings. Underground piping systems may use PVC or HDPE pipe where appropriate based on design conditions. Buried steel pipe shall be coated and wrapped and cathodic protection should be considered as required by the soil conditions. Carbon steel bolts for mechanical joints shall be wrapped. Cast iron valves may be used for wastewater, potable water, and fire protection only. Lubricating oil piping shall be made of A53 (ASME) or equivalent material, with Schedule 40 minimum pipe thickness or equivalent standard thickness. Pressure piping shall be of seamless pipe. The pipeline from last filter on the generator oil supply manifold to the generator group connecting point shall be made of stainless steel. The control oil pipeline shall be stainless steel seamless pipe. The cooling water and fire protection water piping shall be made of carbon steel. The pipes used for acids or caustic solutions shall be made of anti-corrosive material. The chlorine piping shall also be of anti-corrosive material. Instrument compressed air piping shall be made of stainless steel. The joints of piping shall be welded and, for thread-type joints, sealed weld shall be applied. Demineralized water pipe shall be made of stainless steel. Piping materials under special conditions shall be as follows: Sodium hydroxide — Stainless steel or semi transparent FRP Hydrochloric acid — Polyvinyl chloride pipe or FRP Other chemicals — Polyvinyl chloride pipe or FRP The materials of the piping leading from drains, vents, and so on to the shutoff valve on the main pipe shall be made of the same material as the main pipe. Potable water piping shall be schedule 80 PVC pipe or HDPE and fittings with bronze valves except for exterior piping in rack shall be schedule 80 A53 galvanized with 3000# cadmium plated A105 threaded fittings. Potable water shall s...
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PIPING MATERIALS. A. For riser pipes and fittings, refer to Sections 02501 - Ductile-iron Pipe and Fittings through 02528 - Polyethylene Wrap.
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PIPING MATERIALS. A. All sprinkler piping 2-inches and smaller shall be standard weight Schedule 40, ASTM A 53, ASTM A 135 or ASTM A 795 black steel pipe, with threaded connections. B. Sprinkler piping and fire main piping 2-1/2 inches and larger shall be Schedule 40, ASTM A 135 or ASTM A 795 black steel pipe, with rolled-grooved ends and grooved-end fittings. C. Fittings for threaded connections shall be cast-iron threaded fittings, ASME B16.4, Class 125 standard pattern, with threads constructed in accordance with ASME B1.20.1 or malleable iron threaded fittings, ASME B16.3, Class 150 standard pattern, with threads constructed in accordance with ASME B1. D. All fittings for roll grooved pipe shall be grooved end fittings for steel pipe, UL Listed and FM Approved, ASTM A 563, Grade 65-45-12 ductile iron or ASTM A 47 Grade 32510 malleable iron, with grooves or shoulders designed to accept grooved couplings. E. Couplings for roll grooved end steel pipe and grooved fittings shall be UL 213, AWWA C606, ASTM A 563 ductile iron or ASTM A 47 malleable iron housing with synthetic rubber gasket. ASTM A 183 carbon steel bolts and nuts.
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