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    ERW welding round pipes also are called as Electric Resistance Welded Pipes. Resistance welded steel pipe is divided into AC welded steel pipe and DC welded steel pipe two forms.
    Ac welding is divided into low frequency welding, medium frequency welding, super medium frequency welding and high frequency welding according to different frequencies. High-frequency welding is mainly used for the production of thin-walled steel pipes or ordinary thick steel pipes, and high-frequency welding is divided into contact welding and induction welding. Dc welding is generally used for small diameter steel pipes.
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ltem å“å |
Steel Grade ç‰Œå· |
Specification规 æ ¼ O.D.X W.T.MM 外径xå£åŽš |
ProductionStandard æ‰§è¡Œæ ‡å‡† |
Application andUsage 主è¦ç”¨é€” |
| Tubing 油管 |
J55,NB0-1 | Ф33.4-114.3x3.18-7.82 | API SPEC 5CTGBT 19830 | Cil Pipe Used in the Oil and Gas Industry 石迪天然气工业用油管 |
| Casing Pipe 套管 |
H40,J55,K55,N80-1 | Ф114.3-338.7x5.21-11.43 | API SPEC 5CTGBT 19830 | Casing Pipe Used in the Well of Oil and Gas Industry 石油天然气工业油气井套管 |
| Line Pipe 管线管 |
A,B,X42,X46,X52X56,X60,X65, X70,L245,L290,L320, L360,L390, L415,L450,L485,L2454B,L290MB, L360MB,L415MB,L450MB,L485MB SGP |
Ф33.4-406.4 x2.1-14.0 | API SPEC 5LGBIT9711 | Pipeline Transrission of Oil and Gas Industry 石油天然气 å·¥ä¸šç®¡çº¿è¾“é€ |
| Fluid Transmission Pipe æµä½“输é€ç®¡ |
Q195,Q215A,Q2158,Q2354,Q235B, Q285A,Q2958,Q345A,Q345B |
Ф33.7-406.4x2.0~14.0 | "GB/T 3091, GB/T 13793, JIS G 3452" |
Low Pressure Fluid (Water,Gas)Trangmisslon æ°´,æ°”ç‰ä½ŽåŽ‹æµä½“è¾“é€ |
| Slotted liner 割ç¼ç®¡ |
J55,K55,NB0-1 | Ф60.32-177.8x5-9.19 | API SPEC 5CT GB/T19830 | Applod in the sand prolection in the oil,ges  and water well 用于油,æ°”,æ°´äº•çš„é˜²ç ‚ |
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Black and Hot-dipped zinccoated ,welded steel pipe |
GradeA,GradeB | Ф33,4 406.4x3.38~12.7 | ASTM A53/A53M | Uncoalod and Hot-dipped Galvanized Welded Steel Pipe æ— é•€æ™¨å’Œçƒæµ¸é•€é”Œç„ŠæŽ¥é‹¼è¨¾ |
| Welded Steel Pipe for Pressure 压力焊接钢管 |
P195TR1,P195TR2,P235TR1, P235TR2,P265TR1,P265TR2 |
Ф33.7-406.4x2.0~14.0 | EN10217-1 | Weldied Steel Pipe for Pressure Applicalion 压力用选焊接钢管 |
| Piling Pipe 桩管 |
Grade1,Grade2,Grade3 | Ф152.4-406.4x3.4-12.7 | ASTM A252 | Piling Pipe for Pernanent loadsupporling  function 永久性载è·æ”¯æ’‘作用的管桩 |
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Cold-Formed weldedUnalloyed Struclural |
S235JRH,S275J0H,S355J0H,C250, C350,C450,Grde1,Gnda2,STK230, STK400,STK490,STK500,STK540 |
Ф33,4-406.4x2.0-14.0 Ф33.7-406.4x2.0-14.0 Ф48.6-406.4x2-3-12.7 |
EN10219-1,EN10219-2, ASNZS 1163,ASINZS 1074, JIS G 3444 |
Welded Steel Pipa forStructural Application 结构用途焊接钢管 |
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High Strength Atmospheric Corrosion ResistingWelded Steel TubeFor Structural Purpose |
Q295GNH,Q310GNH,0355GNH | Ф33,7-355.6x2.0-13.5 | YB/T 4112 | High Strength AtmosphericCorosion Resisting WeldedSieel Tube For StrucluralPurpose 结构用的高强度è€å€™ç„ŠæŽ¥é’¢ç®¡ |
| SPRINKLER PIPE 消防管 |
GradeB | Ф33.4~158.3x2.77-7.11 | ASTM A135,ASTM A795, FM1690,ASTMA53/A53M |
Steel Pipe For Fire Fighting消防用钢管 |
| SOUARE PIPE 方管 |
Q235,Q355,Q390,Q420, |
100^100^T-170^170^ Tx2.0-11.0 |
EN10219-2ASTM A500GBT6728 |
Photovoltaic Support, TorgueShatt Pipe, Struetural Pipe,ete å…‰ä¼æ”¯æž¶,æ‰çŸ©è½´ç®¡,ç»“æž„ç”¨ç®¡ç‰ |
| OCTAGONAL TUBE 八角暂 |
Q355 | 155^ 155^ TX2.75-4.0 |  | Hige Strength W'elded SteelTube For Structural Purposd 结构用高强度焊接钢管 |
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| 2PE/3PE COATED STEEL PIPE IEXECUTIVE STANDARD:GB-T23257-2009) |
二,三层防è…管 (æ‰§è¡Œæ ‡å‡† GB-T23257-2009 æ ‡å‡†) |
Buried steel pipes with 2PE/3PE coating are used for the transmission of water, oil, gas, and other media, the workinc temperature is 50C -70fc, it has good perfomance of anti-corrosive low water absorption rate, high mechanical strength. |
二,三层èšä¹™çƒ¯(PE)防è…埋地管é“用于输é€æ°´,æ²¹,æ°”ç‰ä»‹è´¨,工作温50℃-70℃,其具有防è…性能好,å¸æ°´çŽ‡ä½Žæœºæ¢°å¼ºåº¦é«˜ç‰æ€§èƒ½.  |
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| EXTERNAL PE COATED STEEL PIPE (EXECUTIVE STANDARD:DIN30670-1991) |
èšä¹™çƒ¯å¤–防è…管(执行DIN30670-1991æ ‡å‡†) |
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Buried steel pipes with PE coating are used for the transmission of water, oil, gas, and other media, the working temperature is 50'C .70'C, it has good performance of ant-corrosive, low water absorption rate, high mechanical strength. Â |
三 PE防è…埋地管é“用于输é€æ°´,æ²¹,æ°”ç‰ä»‹è´¨,工作温度50C-70℃,其具有防è…性能好,å¸æ°´çŽ‡ä½Ž,机强度高ç‰æ€§èƒ½. |
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| EXTERNALDUAL-LAYER FUSION BONDED EPOXY POWDER COATING (EXECUTIVE STANDARD:O/CNPC38-2002) |
åŒå±‚熔结环氧粉末外涂层 (执行 Q/CNPC38-2002æ ‡å‡†) |
Steel pipes with external dual-layer fusion bonded epoxy powdeicoating are used for the transmission of water, onl, natural gas, anoother media, the working temperature is -30℃ - 100'c, this coatingis easy to paint and no pollution. It has good performance ofanti-impact, bending, and high-temperature resistance. It is widelyused in domestic and international. |
åŒå±‚熔结环氧粉末涂层防è…钢管适用于输é€çŸ³æ²¹,天然气,æ°´ç‰ä»‹è´¨,工作温度-30℃-100℃. 该涂层具有涂敷æ“作简便,æ— æ±¡æŸ“,涂层抗冲击和弯曲性能好è€æ¸©æ€§é«˜ç‰ç‰¹ç‚¹,在国内外得到广泛应用.  |
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| FUSION BONDED EPOXY POWDER COATING (EXECUTIVE STANDARD: SY/T0442-2010) |
熔结环氧粉末涂层(执行 SY/T0442-2010 æ ‡å‡†) |
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Steel pipes with internal fusion bonded epoxy powder coating is used in the transmission of water, natural gas, and other media the working temperature is-30c -100c, and it can decrease there-pollution during transmission, and prolong the lifetime of the steel pipeline. Â |
熔结环氧粉末内涂层防è…钢管适用于输é€æ°´,天然气ç‰ä»‹è´¨å·¥ä½œæ¸©åº¦ä¸º-30℃-100℃,å…¶å‡å°‘输é€ä»‹è´¨çš„二次污染,延长钢制管é“的使用寿命. |
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| COAL TAR EPOXY COATED STEEL PIPE (EXECUTIVE STANDARD:SY/T0447-2014) |
环氧煤沥é’防è…管(执行 SY/T0447-2014æ ‡å‡†) |
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Steel pipes with coal tar epoxy coating are used in the transmission of water, oil, natural gas, and other media, the temperature of transmitted media cannot exceed 110'c, and it has a function of anti corrosivc. Â |
环氧煤沥é’防è…钢管适用于输é€æ°´,æ²¹,天然气ç‰ä»‹è´¨,输é€ä»‹è´¨æ¸©åº¦ä¸è¶…过110℃,具有抗è…蚀功能. |
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    The high-frequency welded pipe is included in the ERW welded pipe, which is an ERW welded pipe produced by the high-frequency welding process. ERW straight seam welded pipe is a steel pipe with advanced product performance, leading quality and relatively economical in the field of oil and gas storage and transportation. ERW straight seam welded pipe surface quenching and tempering heat treatment is usually carried out by induction heating or flame heating.
    The main technical parameters are surface hardness, local hardness and effective hardening layer depth.
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| Surface | Plain/Beveled/Thread/Coupling/ Pipe Cap |
| Length | S355 X42 X46 X60 ERW Welded Steel Pipe |
| Thickness | 2-60mm |
| Length | 1000-12000mm or as Request |
| Materials |
Q195-Q235, Ss400, St37-2, Stk500, Q235A, Q235B |
| Od | 8-600mm |
  
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   This type of steel pipes and tubes are widely used in various fields such as engineering purposes fencing, scaffolding. line pipes etc.ERW steel pipes and tube are available in various qualities. wall thicknesses. and diameters of the finished pipes.
    Application of Electric Resistance Arc Welded (ERW) Steel Pipe: Tap water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction. For liquid transportation, water supply and drainage.
      For gas, gas, steam, liquefied petroleum gas. For structure: piling pipe, bridge; Dock, road, building structural tube, etc.
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   Our company cooperates with major steel mills and has advanced production lines for sheet and pipe materials, complete testing equipment, and a strict quality assurance system.
    We specializes in various kinds of steel concerned building materials. Such as Galvanized round pipe, square/rectangular/Irregular pipe, Scaffold pipe, various steel coils/stripe/plate, PC wire, PC strands, rebar, photovoltaic bracket, Angle steel, U/H/C-shaped steel and so on.
    Especially our patented products-Rare Earth Weather & Corrosion Resistant Steel, it is a green, environmentally friendly, and corrosion-resistant new type of steel that can replace traditional galvanizing and rust prevention processes.
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