In the pipe fittings industry, various certifications and standards ensure the quality, performance, and safety of the products. Here are some commonly recognized certifications and standards in the pipe fittings industry:
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ASTM Standards: The American Society for Testing and Materials (ASTM) has developed numerous standards for pipe fittings, including materials, dimensions, testing procedures, and performance requirements. These standards ensure consistency and quality in the manufacturing and use of pipe fittings. ASTM A105, ASTM A234, ATTM F442 and ASTM A403 are examples of standards for various types of pipe fittings.
ANSI/ASME B16 Standards: Developed by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME), the B16 series of standards cover dimensions, materials, pressure ratings, and design considerations for pipe fittings such as flanges, valves, elbows, tees, and reducers.
The American National Standards Institute (ANSI) establishes standards for pipe fittings to ensure compatibility, interchangeability, and safety. ANSI B16 standards are widely followed for dimensions, tolerances, materials, and testing requirements of pipe fittings.
ASME B16 series of standards covers dimensions, materials, and pressure ratings for various types of pipe fittings, flanges, and valves.
ISO Standards: The International Organization for Standardization (ISO) develops globally recognized standards for various industries, including pipe fittings. ISO standards cover aspects such as dimensions, materials, testing, and quality management systems to ensure product conformity and performance. ISO and ISO 49 provide specifications for threaded fittings, while ISO and ISO cover dimensions and materials for butt-welded fittings
DIN Standards: The Deutsches Institut für Normung (DIN) has developed standards for pipe fittings in Germany.and DIN provides specifications for plate flanges.
DIN : This standard covers the dimensions and tolerances of steel butt-welding pipe fittings. It specifies requirements for elbows and bends with a range of angles and radii.
DIN : This standard provides specifications for steel butt-welding pipe fittings, including reducers and tees. It specifies the dimensions, tolerances, and material requirements for these fittings.
DIN specifies the dimensions and technical requirements for flat flanges with a raised face (RF) or a flat face (FF). These flanges are commonly used in pipeline systems to connect pipes, valves, and other equipment.
DIN : This standard covers steel butt-welding pipe fittings, including concentric and eccentric reducers. It specifies the dimensions, tolerances, and materials for these fittings used in pipelines.
DIN : This standard provides guidelines for steel butt-welding pipe fittings, specifically end caps. It specifies the dimensions, tolerances, and materials for end caps used to seal the ends of pipes.
DIN : This standard covers threaded couplings for steel pipes. It specifies the dimensions, tolerances, and thread types for these couplings used in piping systems.
DIN : This standard provides specifications for threaded fittings with parallel internal threads for steel pipes. It covers fittings such as elbows, tees, and unions, specifying dimensions, tolerances, and thread types.
JIS Standards: The Japanese Industrial Standards (JIS) define requirements for pipe fittings used in Japan.
JIS B: This standard specifies the dimensions of butt-welding pipe fittings for general use. It covers elbows, tees, and reducers made of carbon steel and alloy steel.
JIS B: This standard provides specifications for steel butt-welding pipe fittings. It covers elbows and tees made of carbon steel, alloy steel, and stainless steel.
JIS B: This standard specifies the dimensions of butt-welding pipe fittings for pressure purposes. It covers elbows and tees made of carbon steel, alloy steel, and stainless steel.
JIS B: This standard covers steel socket-welding pipe fittings. It provides dimensions and specifications for socket-welding elbows and tees made of carbon steel, alloy steel, and stainless steel.
JIS B: This standard specifies the dimensions, tolerances, and materials for steel pipe flanges. It covers slip-on flanges, blind flanges, weld neck flanges, socket-welding flanges, and threaded flanges.
JIS B: This standard provides specifications for screw pipe fittings for general use. It covers fittings such as elbows, tees, crosses, and caps made of malleable cast iron or cast copper alloy.
JIS B: This standard specifies the dimensions and materials for steel socket-welding pipe fittings. It covers socket-welding elbows and tees made of carbon steel, alloy steel, and stainless steel.
EN Standards: The European Committee for Standardization (CEN) has developed EN standards that define requirements for pipe fittings in Europe. EN and EN are examples of standards for various types of fittings used in pressure applications.
EN : This standard covers the design and dimensions of butt-welding pipe fittings made of carbon steel and alloy steel. It includes specifications for elbows, tees, reducers, caps, and other fittings.
EN : This standard specifies the requirements for threaded steel tubes and screwed fittings. It covers both medium and heavy series steel tubes and threaded fittings used for water and other non-aggressive fluids.
EN : This standard specifies requirements for non-alloy steel threaded fittings. It covers threaded fittings such as sockets, bends, tees, unions, and bushings used in general applications.
EN : This standard specifies the requirements for threaded pipe fittings made of malleable cast iron. This standard covers a range of fittings used in various applications, particularly in plumbing and piping systems.
EN : This standard provides specifications for flanges and their joints. It covers various types of flanges, including weld neck, slip-on, threaded, and blind flanges, with different pressure ratings and dimensions.
EN : This standard covers pipe fittings for water supply and irrigation systems. It includes specifications for fittings such as bends, tees, reducers, and end caps made of thermoplastics, including polyethylene (PE) and polypropylene (PP).
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EN : This standard provides specifications for buried polyethylene (PE) pipe systems for gas supply. It covers fittings such as bends, tees, reducers, and end caps used in gas distribution networks.
EN : This standard specifies copper and copper alloy fittings for plumbing applications. It covers fittings such as elbows, tees, couplings, and adapters used in hot and cold water supply systems.
MSS Standards: The Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) provides a range of standards for pipe fittings. MSS SP-44 covers steel pipeline flanges, MSS SP-75 provides specifications for high-strength, low-alloy steel fittings, and MSS SP-97 covers integrally reinforced forged branch outlet fittings.
API Certifications: The American Petroleum Institute (API) offers certifications for pipe fittings used in the oil and gas industry. The API standards specify requirements for design, materials, manufacturing, and testing to ensure reliability, safety, and environmental protection. API 6A provides specifications for wellhead and Christmas tree equipment, while API 602 covers compact steel gate valves
NSF Certifications: The NSF International provides certifications for pipe fittings used in potable water systems. The NSF/ANSI 61 standard evaluates the safety and quality of materials in contact with drinking water, including pipe fittings, to ensure they meet health and regulatory requirements.
DVGW Certifications: In Germany, the German Technical and Scientific Association for Gas and Water (DVGW) provides certifications for pipe fittings used in gas and water supply systems. The DVGW certifications ensure compliance with safety, performance, and quality standards.
WRAS Approvals: In the United Kingdom, the Water Regulations Advisory Scheme (WRAS) offers approvals for pipe fittings used in public water supply systems. WRAS approvals verify that the materials and fittings comply with water supply regulations and do not cause water contamination.
CE Marking: The CE marking is a mandatory conformity mark for products sold within the European Economic Area (EEA). It demonstrates that the product complies with applicable EU directives, including those related to pressure equipment and construction products.
UPC: The UPC (Uniform Plumbing Code) is a set of standards and regulations that govern the design, installation, and inspection of plumbing systems in the United States. The UPC is published by the International Association of Plumbing and Mechanical Officials (IAPMO). While the UPC primarily focuses on plumbing systems as a whole, it also includes standards for pipe fittings.
In the context of pipe fittings, the UPC provides requirements for their material, dimensions, construction, and performance. These standards help ensure that pipe fittings used in plumbing systems meet specific criteria for compatibility, durability, and functionality.
ABS (American Bureau of Shipping) Certification: ABS provides certification for pipe fittings used in the marine and offshore industries. It ensures compliance with ABS rules and standards for materials, design, and manufacturing processes.
DNV (Det Norske Veritas) Certification: DNV certification is relevant for pipe fittings used in the maritime, offshore, and oil and gas sectors. It indicates compliance with DNV rules and requirements for quality, safety, and environmental considerations.
Because of its adaptability and strength, polyvinyl chloride will lead the plastic pipe industry by with over 55% market share and 6.3% growth.[1] PVC pipes and fittings are used in corrosive situations because they withstand chemicals. Smooth interior surfaces limit friction losses, which results in high flow rates. Furthermore, PVC’s lightweight, dependable construction speeds installation and lowers project costs. It is essential for water supply, chemical processing, and waste management. Eventually, PVC piping is utilized for its durability and low maintenance.
PVC stands for polyvinyl chloride. It is a chlorinated hydrocarbon polymer. In its natural state, it is rigid and brittle. But when combined with additives such as plasticizers, it becomes more resilient and malleable. PVC pipes and fittings are utilized in fluid transport systems owing to their corrosion resistance, lightweight, and flow inside surfaces. Solvent welding joins the pipe and fittings for solid and leak-proof connections. Particularly, PVC piping is nonconductive for electrical conduits and potable water systems since it prevents electrochemical degradation. Apart from that, such pipes uphold structural integrity under thermal variations but may become brittle at low temperatures.
Different PVC Piping
PVC piping can be classified into types based on the application. For instance, water pipes can be scheduled 40 or 80 PVC for cold and hot water supply. They have a pressure rating and are used in residential, commercial, and irrigation systems. On the other hand, drainage pipes might be DWV (Drain-Waste-Vent) PVC. Thin walls handle low-pressure flow in sewer and wastewater systems. Wire pipes or conduits, including schedule 80 PVC, protect electrical cables for electrical applications. They resist corrosion and are fire retardant for long-term wiring systems.
Different PVC Fittings
PVC pipe fittings also vary per functionality. A coupling connects two pipes and is available in standard or reducing patterns. Elbows, 90° or 45°, change the direction of piping and are key to complex layouts. The Tee fitting splits or joins flow in a T-shaped intersection in branching systems. A cap seals a PVC pipe in temporary or permanent pipe closures. An adapter connects PVC to different materials through solvent welding or threaded ends in transitioning systems.
Size and Compatibility: Sizing is key to PVC piping systems. Pipe diameters are either nominally or by schedule. The latter indicates wall thickness. Due to its thicker walls, Schedule 80 might be needed for high-pressure applications. Always check for ASTM D compliance for dimensional compatibility with valves or couplings.
Material Specifications: PVC has different grades for high-temperature applications. For instance, CPVC can handle up to 200°F, and standard PVC tops around 140°F. Resin blends with UV inhibitors or chemical resistance ensures a suitable material for corrosive settings.
Connection Method: Different fittings use solvent welding, threaded, or push-fit connections. Solvent-welded joints with primers and cements create a chemical bond. Nevertheless, threaded fittings may benefit systems requiring recurrent disassembly. The pressure rating for solvent-welded joints might be higher than for threaded connections.
Durability and Longevity: When considering the life of PVC fittings, consider temperature, pressure, and chemical exposure. PVC’s brittle nature at low temperatures should prompt rubberized or flexible fittings in such conditions. Also, thermal expansion coefficients must be considered in long piping runs to circumvent stress failure.
Manufacturer and Brand: Quality control varies between manufacturers. Look for NSF certification or ISO compliance for production standards. Brands may offer higher-strength fittings with added impact modifiers to function in punitive industrial settings.
Where PVC Pipes are Used
PVC piping is vital in plumbing for potable water lines. In irrigation systems, PVC’s low friction coefficient underrates pressure loss over long distances for water flow in agricultural fields. Its interior surface for drainage systems avoids blockages in industrial situations with debris and waste materials. Plus, PVC’s thermal insulation properties prevent condensation buildup in HVAC drainage systems for lower mold growth.
Why PVC is Ideal
PVC piping resists chemical corrosion in environments with acidic or alkaline substances, including chemical processing plants. It also bears biological growth to prevent biofilm formation in water supply systems. Besides, its lightweight nature decreases transportation and labor costs. Installers can move and cut pipes without heavy machinery. It is more apparent in large-scale projects. Hundreds of meters of piping must be laid in remote locations with logistical challenges.
We accentuate the prominence of material quality when choosing our PVC piping. Our products, made from unplasticized polyvinyl chloride (PVC-U), offer strength with pressure ratings from 0.63 MPa to 2.5 MPa. Our pipes satisfy Thailand's local standards. With sizes from 20 mm to 630 mm, we guarantee flexibility for water supply needs with a life expectancy greater than 50 years under proper utilization.
LESSO manufactures industrial PVC piping and PVC plumbing fittings. With over 50,000 m² of manufacturing area, we have an annual production capacity of 80,500 tons. We also use extrusion technology for pressure and chemical resistance. Our international-standard materials are ideal for residential and infrastructure projects because of their impact resistance and thermal stability. Our PVC-U pipes are intended for cold water delivery for reliability in various conditions. So, come to contact us for more information!
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