SUZHOU SUPERIOR STEEL CO.,LTD

Carbon & Alloy steel U bend tubes

Steel Tube Standard：SA179, DIN17175, SA213, EN10216...
Tube Material：T11, T12, T22, P195, P235, P265, ST35.8...
Tube Size Range：OD 5/8"~1 1/2" , WT 1.65mm~2.77mm
Bending Radius：29mm ~ 675.84mm
Surface Quality：Oiled, Black Phosphating, Oxide skin
Type of End-Finish：PE Cap
Delivery Time：45 days to 60 days
Packing Style：Wooden box
Terms of Payment：50% T/T Advance payment

U-Tubes Carbon & Alloy steel U tubes:
Size Range：OD 5/8"~1 1/2" , WT 1.65mm~2.77mm Min Radio: 29mm ; Max Radio:675.84mm
Type of End-Finish：PE

Stainless steel U tubes:Size Range：OD 5/8"~1 1/2" , WT 1.65mm~2.77mm Min Radio: 29mm ; Max Radio:675.84mm
Type of End-Finish：PE

Tchnical conditions:Heat treatment:Stress relive annealing of U-tubes after bendingSurface condition Finished U-tubes shall be free of scale, without scratches after bendin

Carbon & Alloy steel U tubes:
Size Range：OD 5/8"~1 1/2" , WT 1.65mm~2.77mm Min Radio: 29mm ; Max Radio:675.84mm
Type of End-Finish：PE
Stainless steel U tubes:
Size Range：OD 5/8"~1 1/2" , WT 1.65mm~2.77mm Min Radio: 29mm ; Max Radio:675.84mm
Type of End-Finish：PE


Tchnical conditions:
Heat treatment:Stress relive 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 (T min)
T(min) ≥ (SW × (2×R + D))/( 2× (R+D)
where: SW is smallest wall thickness
D Nominal outside diameter
R 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
Surface condition Finished U-tubes shall be free of scale, without scratches after bending,

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

碳钢, 不锈钢和合金钢U型弯管

钢管标准：SA179、DIN17175、SA213、EN10216。。。

管材：T11、T12、T22、P195、P235、P265、ST35.8。。。

卡套管尺寸范围：外径5/8“~1 1/2”，WT 1.65mm~2.77mm

弯曲半径：29mm~675.84mm

表面质量：油性、黑色磷化、氧化皮

端部饰面类型：PE帽

交货时间：45天至60天

包装形式：木箱

付款条件：50%T/T预付款

U形管的强制性试验

100%尺寸和视觉控制。

100%球通过测试

100%水压试验，最小10Mpa/min 10秒。

涂层：钝化和涂油，黑色油漆或清漆

包装：两端为塑料塞，每捆最多3000公斤，带几条钢带，每捆两个标签，用木箱包装的防水纸包裹

工厂试验证书：EN 10204/3.1B