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Carbon & Alloy steel U tubes – Wuxi Petrotube Industries Co., Ltd. |
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Carbon & Alloy steel U tubes

Carbon & Alloy steel U tubes

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China, Wuxi
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Product Name:

U-Shape Steel Tube

Product Keyword:

Seamless Pipe, U-Shape Steel Pipe, U Tube, U Pipe,

Brief Description:

U-Shape Steel Tube, Outside Diameter: 5/8" to 1-1/2", Wall Thickness: 1.65mm to 2.77mm, Min Radius: 29mm; Max Radius: 675.84mm, Type of End-Finish: PE, Material: Carbon & Alloy Steel or Stainless Steel

Product Details:

Size RangeOD 5/8"~1 1/2", WT 1.65mm~2.77mm, Min Radius: 29mm ; Max Radius:675.84mm

Type of End-FinishPE

Technical Conditions:

Heat Treatment: Stress Relief Annealing of U-Tubes after Bending

Surface Condition: Finished U-tubes shall be free of scale, without scratches after bending

Dimensional Tolerances: U-tubes acc. to TEMA R.C.B.

Length of straight part -0/+5 mm

Flattening (also called "Ovality") at the bend shall not exceed 10% of the nominal tube outside diameter.

Wall thickness in bending part acc. to TEMA RCB 2.31

Minimum tube wall thickness in the bend part (Tmin): T(min) ≥ (SW × (2×R + D))/( 2× (R+D)

where: SW is smallest wall thickness, D for Nominal outside diameter, R for radius

Radius tolerance

1) For R < 100 mm +/- 3 mm

2) For R ≥ 100 mm +/- 5 mm

Straightness tolerance max. 1.5 mm per 1 m

U-Tube ends: Plain, vertically cut to the tube axis

Repairs by welding: Prohibited

Mandatory tests for U-tubes

100% Dimensional and visual control.

100% Ball passed test

100% Hydrostatic test min 10Mpa/ min 10sec.

Coating: Passivation and Oiled, Black Paint or Varnish

Packing: Plastic Plugs in both ends, Bundles of max. 3,000kg with several Steel Strips, Two Tags on each bundle, Wrapped in Waterproof Paper, Packed in Wooden case

Mill Test Certificate: EN 10204/3.1B

Addition: Clean Steel Grade covered with NACE MR-0175

USAGE: Heat-Exchanger; Steam Boiler; Hot-Water Boiler; Medium Temperature Boiler service ; Oil and Gas Transportation, Low-Temperature Service; Ship-Building etc.

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