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ERW steel pipes are made of carbon steel and alloy steel,and are mainly used for transporting oil and natural gas.They have hign strength,good toughness,and high resistance to corrosion and pressure. Size Welding Steel: 1/2" ~48", DN15~DN1200 OD21.3MM~1219.2MM Industrial Processes hot rolled,hot expanded,cold drawn,and hot galvanized Application Our ERW steel pipes are widely used in many industries,such as petroleum,power generation,natural gas,chemicals,shipbuilding,papermaking,and metallurgy,etc. Standard:ANSI,JIS,DIN Thickness: SGP, STD, SCH40 Size: 1/2"--48" Material: ASTM A106,A53GRB Surface treatment: Transparent oil, rust-proof black oil or hot galvanized. Payment:T/T OR L/C. Major Products: Seamless pipes,Elbow, Reducer, Tee, Pipe Cap, Flange and etc... Special design available All the production process are made according to ISO9001:2000 strictly. keyword:ERW steel pipe,welded pipe,welding pipe ,A53 ERW pipe

ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43 DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011 EN: EN10253-1, EN10253-2 ASTM A403 – ASME SA403 – Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings ASME B16.9 – Factory-Made Wrought Fittings Buttwelding ASME B16.25 – Buttwelding Ends ASME B16.28 – Wrought Steel Short Radius Elbows and Buttwelding Returns MSS SP-43 – Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications Materials: Carbon Steel:ASTM A234 WPB WPC A105 A106 A53 A283-D API5LB A671-CC-70 A515-50 A135-A A179-C,etc Stainless Steel:304/304L, 316/316L,316Ti,321,317L,310S,etc Alloy Steel:A335-P1,P2 ,P5 ,P11,P12 ,P22,P91,P92,A369-FP1,P2 A250-T1 A209-T1 A213-T2,T9 ,T12 A199-T11,T22, Duplex Stainless Steel: S31803(SAF2205),S32750(SAF2507),S31500(3RE60)

Flange Face Surface Finish The American National Standards Institute (ANSI) code for flanges and flanged fittings (ANSI B16.5) requires that the flange face has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. A serrated finish, either concentric or spiral, is required with 30 to 55 grooves per inch and a resultant roughness between 125 and 500 microinches. This allows for various grades of surface finish to be made available by flange manufactures for the gasket contact surface of metal flanges. These grades are often referred to by name e.g. stock finish. The exact definition of each grade may differ between manufacturers, but can be generalised as follows; Stock Finish The gasket contact surface is typically formed by a continuous (sometimes called phonographic) spiral groove generated by a 1.6mm radius round-nosed tool at a feed rate of 0.8mm per revolution with a depth of 0.15mm. This will result in a roughness between Ra 3.2 and 12.5 micrometers (125 - 500 microinch). Smooth Finish No definite tool marking should be apparent to the naked eye. This is typically achieved by having the gasket contact surface formed by a continuous (sometimes called phonographic) spiral groove generated by a 0.8mm radius round-nosed tool at a feed rate of 0.3mm per revolution with a depth of 0.05mm. This will result in a roughness between Ra 3.2 and 6.3 micrometers (125 - 250 microinch). Hydrogen Service Finish The finish for flanges in hydrogen service is very smooth, typically between Ra 2 and 3.2 micrometers (79 - 125 microinch). Cold Water Finish The flange face appears as mirror like. This flange finish is usually expected to be used with metal to metal contact, i.e. without a gasket. It is seldom used in the oil, petrochem and related industries. Measuring Surface Roughness Flange finish is generally measured by visual and tactile means. Comparing the feel of the machined face with that of a surface finish comparator gauge, occasionally referred to as a Rupert gauge, is considered adequate. There are two common methods of expressing roughness. They are the Arithmetic Average Roughness Height (AARH) and the Root Mean Square (RMS) Average. Arithmetic Average Roughness Height- Calculation of the Arithmetic Average Roughness Height involves measuring the distance of the peaks and valleys and performing an arithmetic average of the measurements.

A105N /LF2 1/2" to 24" 150 to 1500lb RF & RTJ A105N /LF2 1/2" to 12" 150 to 2500lb RF & RTJ A182 F5 1/2" to 12" 300/600lb RF & RTJ A182 F11 1/2" to 12" 150 to 2500lb RF & RTJ A182 F22 1/2" to 12" 300 to 2500lb RF & RTJ A182 F91 1/2" to 12" 300 to 2500lb RF & RTJ A182 F316/L - 1.4401/4 1/2" to 12" 150 to 2500lb RF & RTJ

ss 904l Buttweld fittings are produced in various shapes such as Elbow, Tee , Reducers, Cap,Bend, Stub-end ,Collar,Cross etc. We also keep stock of ASTM A403 WP904L Buttweld Fittings/ASTM B366 Buttweld Fittings .ss 904l elbow,ss 904l pipe,ss 904l Tee, ss 904l Reducer , ss 904l Cross,ss 904l bend, ss 904l Stub end etc :- SS 904l 90 Deg Long Radius Elbow SS 904l 45 Deg Elbow SS 904l 180 Deg Elbow SS 904l Concentric Reducer SS 904l Eccentric Reducer SS 904l Tee SS 904l Stub End SS 904l Cross SS 904l Cap TYPES AND SIZES RANGE OF SS 904L Buttweld Fitting :- Range of SS 904L weld fittings : 1/8" NB – 38" NB Schedules of SS 904L Butt weld fittings : 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, XXS,100, 120, 140, 160. Types of SS 904L Butt weld fittings : Welded , seamless, fabricated Other Material in Buttweld Fittings Stainless Steel Buttweld fittings: ASTM A403 WP Gr. 304, 304H, 304L, 309, 310, 316, 316L, 316TI, 316H, 317L, 321, 347, 904L Carbon Steel Buttweld fittings : ASTM A234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70 low Carbon Steel Buttweld fittings: ASTM A420 WPL3 , A420WPL6 Alloy Steel Buttweld fittings: ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, Duplex : ASTM A 815, UNS NO S 31803, S 32205, S 32760, S 32750 Inconel : 625, 600, 800, 800H, 825 Hastelloy : c276, c22

We are capable of supplying the 3000# and 6000# forged fittings with the shortest lead times. Our stock of ASTM/ASME SA105N Forged Carbon Steel ranges from 1/8`` to 4``NB, 3000# and 6000# Screwed NPT or BSPT and Socket Weld. We can offer forged fittings with additional surface coatings such as Sand Blast Finish, Blackodised Finish, Electro Zinc, Aluminised, Phosphated, Self Colour, and with Hot Dip Galvanising. Forged Steel Fittings, A105 Carbon Steel Forged Fittings, MS Forged Fittings, Stainless Steel Forged Fittings. We can also offer forged pipe fittings in Low Temp ASTM/ASME SA350 LF2 and Stainless Steel ASTM/ASME SA182 F304/L & F316/L. We manufacture and supply ANSI forged pipe fittings in all materials and pressures. On requests we can also manufacture forged fittings as per customer drawings at competitive prices. We are a specialist in the production and export of a wide range of pipe fittings in carbon steel, high yield, alloy steel, stainless steel, duplex, super duplex, nickel alloys and other exotic materials. Our products are regularly exported to Brazil, South Africa, UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan and Saudi Arabia. High Pressure Socket Weld Forged Pipe Fittings Pressure Class 3000LBS, 6000LBS, 9000LBS Socket Weld Forged Fittings Products Elbow 90 Degree, Elbow 45 Degree, Tee, Cross, Union, Coupling, Half Coupling, Cap, Boss, Outlet, Welding Outlet, Insert Dimension Specifications ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 Size 1/8″~4″ (DN6~DN100) Pressure Class 3000LBS, 6000LBS, 9000LBS Threaded Forged Fittings Products Elbow 90 Degree, Elbow 45 Degree, Tee, Cross, Union, Street Elbow, Coupling, Half Coupling, Reducing Coupling, Cap, Hex Head Bushing, Hex Head Plug, Square Head Plug, Round Head Plug, Bull Plug, Boss, Outlet, Hex Nipple, Swage Nipple Dimension Specifications ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 Size 1/8″~4″ (DN6~DN100 )

Our organization is engaged in offering a comprehensive range of Tubes, which includes Seamless Tubes, ERW Tubes, and Welded & CDW Tubes. These tubes are available in various thickness & diameters to meet the demands of our clients. Our range is widely used in sugar mills & distilleries, cement, and construction industries across the globe. RANGE : 1 mm OD upto 254 mm OD in 0.2 TO 50 mm thickness. FORM : ROUND, SQUARE, RECTANGULAR, COIL, `U` SHAPE OTHER : HYDRAULIC TUBE CAPILLARY TUBE BOILER TUBE PRECISION TUBE LENGTH : SINGLE RANDOM, DOUBLE RANDOM, COIL FORM & CUT LENGTH END: PLAIN END, BEVELLED END, THREADED VALUE ADDED SERVICES : EPOXY & FBE COATING ELECTRO POLISH DRAW & EXPANSION BENDING BUFFING Seamless Pipe We offer finest quality of seamless pipes and Seamless Stainless Steel Pipe that find application in sugar, chemical, fertilizer, railways refrigeration etc. Available in all standard sizes, we also customize these products as per clients requirement. Welded Pipe We offer quality welded pipes and Stainless Steel Welded Pipe that are used in air conditioning domestic water service and distribution etc. Widely appreciated for their corrosion and rust resistant properties, our range of welded pipes are available at competitive prices. ERW Pipe Our ERW Pipes and Stainless Steel ERW Pipes are available in various technical specifications such as nominal bore, wall thickness, threading, etc. Resistant to rust and corrosion, durable, reliable performance are some of the features of our quality ERW Pipes Fabricated Pipe Our Fabricated Pipes can be availed in different grades and technical specifications to meet the diverse requirements of engineering industry. These Fabricated pipes and Fabricated Steel Pipe can be availed from us at market leading prices. Threaded Pipes Clients can avail from us an exclusive range of Threaded Pipes with screw-threaded ends for assembling. These pipes are highly appreciated for their durability and longer shelf life and are essentially used for underground pipeline works. API Pipes Our clients are benefited with the exclusive range of API Pipes that are offered with varied thickness and other dimensional specifications. Petroleum Pipes We offer metal pipes like Petroleum Pipes that are applied for various engineering purposes, for example water, gas & sewerage, water wells and lancing pipes for various automotive & industrial applications. Carbon Steel Pipes The Carbon Steel Pipes are the hollow tube with round cross section that is made from fine quality carbon steel. These pipes are used for high temperature applications and are suitable for welding, bending, flanging, and similar operations

Flanges are available various materials such as carbon steel, austenitic / martensitic / ferritic / duplex stainless steel, cast iron, aluminum, brass, bronze, plastic, etc. For specific services, flanges may be internally lined with protective materials (as pipes and fittings) or even painted externally. The material grade of steel flanges shall match the material grade of the joined pipes. The most common materials for flanges are: Carbon steel ASTM A 105 / A 266 Gr. 2 (high temperature carbon steel) ASTM A350 LF1 to LF3 (low temperature carbon steel) ASTM A694 Gr. F42 / F52 / F56 / F60 / F65 (high yield carbon steel flange to match API 5L linepipes) Alloy Steel ASTM A182 Gr. F1 / F2 / F5 / F9 / F11 Cl. 2 / F12 Cl. 2 / F22 Cl. 3 / F91 (alloy steel flanges) Stainless / Duplex Steel ASTM A182 F 304/304L, 316/316L, 321, 347, 348 (stainless steel flanges), 904/904L ASTM A182 F51 (duplex flanges) / F53-F55 (superduplex)

A420 wpl6 BW pipe fittings :Size:Seamless: from 1/2″ to 24″, Welded: from 24″ to 96″ (or as customer requirements) Type:Equal tee, Reduced Tee, Lateral Tee Thickness:SCH10,SCH20,SCH30,STD SCH40, SCH60, XS, SCH80., SCH100, SCH120, SCH140, SCH160, XXS Standard:ASME B16.9, ASME B16.25, MSS SP-75 DIN2615 JISB2311 JISB2312 JISB2313 Material:Carbon Steel – ASTM A234WPB, A234WPC, A420WPL6. 20#,Q235,10#,20#,A3, Q235A, 20G,16Mn, WPHY X60 X65 X70 ,ect Stainless Steel – ASTM A403 WP304,304L,316, 316L,321. 1Cr18Ni9Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, ect Alloy Steel – ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91,16MnR, Cr5Mo, 12Cr1MoV, 10CrMo910,15CrMo, 12Cr2Mo1, etc. Equipment:Pushing Machine,electric bevelling machine, Sand-blasting machine,etc Test:Direct reading light spectrum, hydrostatic test ,X-ray detector,ultrasonic flaw detection ,magnetic powder detector ,etc Qualification:API ,CE ,ISO Application:Petroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction, etc

STEEL PIPE ‐Differences in Seamless and Semi-Seamless Pipes ◆◆Seamless Pipe and Semi-Seamless Pipe◆◆ Seamless pipe is made from pushing a hole through a solid bar. On the other hand, semi-seamless pipe is made by first rolling up a steel sheet and welding it into a cylinder. After that, the cylinder goes through a drawing process where the welding joint is no longer observable on the surface of the pipe thus giving it the name [semi-seamless". 1. Seamless Pipe ■ Manufacturing Method The typical manufacturing method is called Mannesmann process. A round bar billet is first heated to the necessary temperature. While keeping pressure on the outer surface of the bar, a plug is pushed through the billet to create a hollow pipe. This manufacturing method is suitable for larger volume production lots. It can create large bores and is also good for manufacturing thick wall pipes. ■ Features There's no joint, so the original strength and integrity of the material is kept. The drawback is dimensional precision is limited by this manufacturing process. 2. Semi-Seamless Pipe ■ Manufacturing Method This method starts with not a billet but a steel strip coil. An [uncoiler" pulls out the steel strip continuously, the edges of the strip are rolled up and joined by electric resistance welding forming a long pipe. A very high current passes through the joining area creating very high temperature that melts the material at the area. The melted material is pressed and joined together without using additive welding material. Weld bead, or protruding area of the joint, will then be shaved off. After cooling, the pipe then goes through further processes such as straightening and drawing. ■ Features This manufacturing process is suitable for smaller volume production lots. Size is flexible and precision is higher for pipes made from this method. 3. Different Applications of Steel Pipes ■ Plumbing, Piping The purpose is to allow fluid (gas, liquid, etc.) flow inside the pipe. The outer diameter is designated by [A" and the wall thickness is determined by a schedule numbers. These pipes are often called schedule pipes (e.g. gas pipe, water pipe, etc.). Nonstandard sizes are usually not available. Schedule pipes are also called tubes (e.g. hydraulic tubes, air conditioning tubes, etc.) if the actual outer diameter is predetermined. Examples are found in hydraulic tubes, air conditioning tubes, etc. ■ Structural Types and availability vary depending on architectural and machinery application. Sizes are standardized in the case of architectural application. There is a lot of different kinds of steel pipes for machinery parts, so selection depends on usage, quality and precision required. 4. Selection of Steel Pipes When selecting standardized steel pipes, because they are widely available in significant quantity, the option would be selecting a proper vendor. In general, the lead-time will be short since most vendors stock these items and the price would be cheaper. If nonstandard steel pipe is necessary, depending on the size needed, semi-seamless is favorable as the production lot is comparatively smaller and the sizes are more flexible.

Standards: ANSI - B 16.9 ASTM A403 - ASME SA403 - 'Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings' API 590-605 ASME B16.9 - 'Factory-Made Wrought Buttwelding Fittings'' ASME B16.25 - 'Buttwelding Ends' ASME B16.28 - 'Wrought Steel Buttwelding Short Radius Elbows and Returns' MSS SP-43 - 'Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications' Schedule: Sch 5 TO Sch XXS. Sizes: 1/2" TO 36" (SEAMLESS UPTO 24") (WELDED 8" TO 36" ) Materials: Monel, Nickel, Inconel, Hastalloy, Titanium, Tantalum, Stainless Steel, Alloy Steel, Carbon Steel, Cupro-Nickel 90/10 & 70/30 Stainless Steel ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 316/316L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 Type: Butt Weld (BW) Thickness: Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. Dimension: ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313