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BoilerMaster provides mechanical cold bending of ferrous and non- ferrous tubes for use as pressure parts in boilers, heat exchangers and economizers.
Our cold draw bend facilities can bend ferrous tubes up to 4 inches nominal diameters.
General configurations of bends are planar bends of elbows up to 180 degrees (U-bends). Three dimensional bends based on samples or drawings are also carried out. In general, bending is carried out based after considering the bending ratio or strain (i.e radius of tube to bend radius), tube ovality and minimum wall thickness after bending.
BoilerMaster also swages tubes to match fitting requirements.
Our bending process and quality control is designed to meet all general specifications including ASME, TEMA, PED and BS codes.
+ Identifying thinning and ovality requirements.
+ 2-pieces destructive tests of production First Pieces for thinning measurements and internal visual inspection.
+ Ovality measurements at 3 points of U-bends for 10% random sampling of each lot bending.
+ Ovality measurement at 1 point close to the critical bend area of elbow for 10% random sampling of each lot of bending.
+ Ultrasonic measurement of thickness at critical bend, upon request
+ Dye penetration test for surface cracks upon request
+ General dimensional checks for tolerance against drawing.
+ Stress Relief Heat Treatment (Post Bend Heat Treatment) where required
+ Tube Bending Report for reference
+ Packing and delivery must be advised by Client
Other configurations (specify O.D., Length, Thickness, Material Type and Specifications) can be manufactured to meet specific requirements.
Material: Carbon Steel / Stainless Steel
- O.D.(mm): 25 to 102
- L(m): Up to 22m
- T(mm): 1.6 to 4.5
- Materials: ASTM, DIN or equivalent
- Remarks: Drawing preferred
Material Copper / Copper Nickel
- O.D.(mm): 13 to 38.1
- L(m): 6m
- T(mm): Up to 6mm
- Materials: All
- Remarks: Test piece acceptance
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