SEAMLESS, WELDED, ERW, EFW & ELECTROPOLISH
SPECIFICATION : ASTM A213, A249, A268, A269, A270, A271, A312, A358, A376, A409, A468.
GRADE : AISI TP304, TP304L, TP304H, TP310S, TP316H, TP 309, TP310,
TP316TI, TP316, TP316L, TP317, TP317L, TP321, TP347, TP904L etc.
ELECTROPOLISH PIPES & TUBES
Range : 1/4" OD to 4" OD in thk 10 swg, 12 swg, 14 swg,16 swg, 18 swg, 20swg.
GRADE : TP 316, TP316L, TP304, TP304L
OTHERS : Nickel & Nickel Alloys, Inconel, Monel, Hastelloy, Cupro-Nickel,
Titanium, Duplex, Super Duplex etc.
Karwad Steel and Engineering Company is a leading manufacturer and exporter of stainless steel pipes, carbon steel and alloy steel offering high quality products at competitive prices. We provide a variety of pipes and tubes in different dimensions and specifications, catering to both customized and standard requirements to meet the requiremenst of our customers. We source premium grade alloy from reliable market vendors to manufacture our steel pipes. These pipes undergo rigorous quality testing and are carefully packed using high quality materials. We prioritize swift delivery, ensuring our clients receive their products as per scheduled time through refined transportation solutions.
Stainless steel pipes and tubes are fundamental to numerous industries, recognized for their strength, resistance to corrosion and adaptability. They are primarily categorized into several types based on their manufacturing processes: seamless, welded, Electric Resistance Welded (ERW), Electric Fusion Welded (EFW) and electropolished. Seamless pipes are produced without any joints which enhances their structural integrity and makes them suitable for high pressure applications. Welded pipes are formed by joining two or more pieces of stainless steel, allowing for cost-effective production. ERW pipes are created by rolling stainless steel sheets and welding them along the seam, while EFW pipes involve the fusion of the edges using an electric arc. Electropolished pipes undergo a specialized finishing process that removes surface imperfections, resulting in a smooth and shiny surface that enhances corrosion resistance.
The specifications for stainless steel pipes and tubes are governed by various ASTM standards, ensuring consistency and quality across products. Key specifications include ASTM A213, A249, A268, A269, A270, A271, A312, A358, A376, A409, and A468. Each specification addresses specific requirements such as mechanical properties, dimensions and intended use.
For example, ASTM A213 covers seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes while ASTM A312 pertains to seamless and welded austenitic stainless steel pipes for high temperature and general corrosive service.
The grades of stainless steel used in the production of pipes and tubes are crucial in determining their performance characteristics. Common grades include AISI TP304, TP304L, TP304H, TP310S, TP316H, TP309, TP310, TP316TI, TP316, TP316L, TP317, TP317L, TP321, TP347 and TP904L. Each grade possesses unique properties, influenced by varying levels of chromium and nickel content which affect their corrosion resistance and strength.
Electropolished pipes and tubes are available in a range of sizes, specifically from 1/4" OD to 4" OD, with thicknesses of 10 swg, 12 swg, 14 swg, 16 swg, 18 swg and 20 swg. The grades for electropolished products typically include TP316, TP316L, TP304 and TP304L. Additionally, other materials such as nickel and nickel alloys, Inconel, Monel, Hastelloy, Cupro Nickel, titanium, duplex and super duplex are also utilized in the production of specialized pipes and tubes, catering to diverse industrial needs.