METALS INTERNATIONAL LIMITED. Tel: / /6563 Fax: HUhttp://

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Shannon Wilfred Lawrence
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1 METALS INTERNATIONAL LIMITED Tel: / /6563 Fax: HUhttp://

2 Metals International Limited is a worldwide leading company specializing in hot induction bends Induction Bending is a controlled means of bending pipes through the application of local heating using high frequency induced electrical power. Originally used for the purpose of surface hardening steels, induction technology when used in pipe bending consists basically of an induction coil placed around the pipe to be bent. The induction coil heats a narrow, circumferential section of the pipe to a temperature of between 850 and 1100 degrees Celsius (dependant on the material to be formed). As the correct bending temperature range is reached, the pipe is moved slowly through the induction coil whilst the bending force is applied by a fixed radius arm arrangement. As the bending occurs, the adjacent area forward of the heat band is water or air quenched (or may be allowed to cool naturally) thereby allowing the cool material to either side of the heat band to retain the integrity of the original material as best as possible. This means of distortion control provides excellent dimensional accuracy and repeatability. Although induction bending produces excellent results as far as physical properties are concerned, it must be noted that there are two important considerations required firstly the reduction in wall thickness at the outside (extrados) of the bend and secondly the degree of ovality which is present. The induction pipe bending process uses induction heating to produce highly accurate bends. The quality of induction bends is superior to the elbow fitting. Hydro burst tests show that spools with induction bends fail in the straight pipe and not in the bend, whereas in comparable elbow-based systems the elbow (inside radius) is always the first to burst. Stress calculations confirm this. The natural tendency to have a thicker inside wall thus proves to be advantageous and ensures that the bend exceeds the strength of the straight pipe. Company is committed to quality products and also treasures its employees who make it happen. Its vast organizational strength comprises of dedicated and skilled teammates whose core competence lies in making a good products, a better one. Our product are in compliance with quality control at every manufacturing stage in accordance with API-5L, API 5LC,API 5D, API 5LD, API 2B, API 5H, ASTM, and other international specifications. They are also approved by international Third Party Inspection authorities like DNV, BV,SGS, Moody, TUV, ABS,LR,GL,PED,RINA,KR, NKK, AIB-VINEOTTE, CEIL, VELOSI, CCSI, etc. Our goal is to provide high quality products at competitive prices with best service that will ensure long-term relationships with our customers.

3 Nominal Pipe Size in O.D.(m m) Products Range RADIUS(mm) Angle Tangent Length at 3D 4D 5D 6D 8D 10D θ Each end 3" " Wall Thickness (mm) 90, Sch STD, 45, sch10,sch20, 6" , or 350 Sch30,Sch40, 8" as per 700 Sch80,Sch 100, Schu160, XXS, etc. 10" the choice 700 or as per 12" of purchase r 700 the choice 14" of purchaser 16" " " " " " D (Outside 28" diameter of 30" bend)or 32" as per 34" the choice 36" " " " " " " " " " " of purchaser

4 Control Points Bend end preparation:welding ends to be beveled as per ASME B16.25 or as per specified by purchaser. Induction Pipe Bending Standard Bend Tolerances Bend Angle:±1/2 Bend Radius:±1% Bend Plane:±1 End squareness Size NPS36" and smaller:2.4mm(0.09") Size Greater than NPS36":3.0mm(0.12") Linear Dimensions Size Nps24" and smaller:±5mm(0.19") Size Greater than NPS 24":±6mm(0.25") Thinning: <0.10% of the bend nominal wall thickness or 50D/R(%)(R=bend centerline radius, D=nominal outside diameter of starter stock) or 0.05% of the nominal wall thickness of the matching pipe. Applied Specification ANSI/ASME B Factory-Made Wrought Steel Butt-welding Induction Bends for Transportation and Distribution Systems ISO Petroleum and natural gas industries - induction bends, fittings and flanges for pipeline transportation systems Part 2: Fittings BS EN Petroleum and natural gas industries.-induction bends, fittings and flanges for pipeline transportation systems-part 1: Induction Bends MSS SP-75 Specification for High-Test,Wrought, Butt-Welding Fittings

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