S.S SEAMLESS & WELDED u-bEND Tubes

Latest type of "U" bending machine is used for precision cold bending of Seamless & Welded tubes. Specifically prepared jigs and fixtures are used to ensure three dimensional accuracy for U bend tubes. Bending is done for all kind heat exchanges, condenser and boiler applications.

Paras Bhavani Steel Pvt Ltd can make U bent up to R=1 dia. ( Subject to size)

Subsequent to U bending tubes are hydro tested and stress relieved if asked for. Also mock-up pieces are prepared for determining thickness reduction on the bend portion is done to detect cracks, flaws or any type of defects. Special packing is provided to prevent any damage during transit.

Specification Grade Size Range Manufacturing Process Application

Specifications

STANDARD SPICIFICATION APPLICABLE TO
 ASTM / ASME A / SA 213 For Seamless Tubes mainly applicable to Heat Exchangers, Super Heater & Steel Boilers
A / SA 249 For Welded Tubes mainly applicable to Heat Exchangers, Boilers, Condenser, Super Heater, etc.
A / SA 268 For Seamless & Welded Tubes for General Services
A / SA 269 For Seamless & Welded Tubes for General Services
A / SA 312 For Seamless & Welded Pipes
A / SA 358 For Welded Pipes
A / SA 688 For Welded Water Heater & Heat Exchangers U-Tubes
A / SA 789 For Seamless & Welded Duplex Stainless Steel Tubes, Pipes & U-Tubes.
 GERMAN (EN) DIN 17456 For Seamless Tubes For General Services.
DIN 17457 For Welded Tubes For Specific OR Special Requirements.
DIN 10216-5 For Seamless Tubes For Specific OR Special Requirements.
DIN 10217-5 For Welded Tubes For Specific OR Special Requirements.
 NF NF A 49-117 For Seamless Ferritic & Austenitic Stainless Steel Tubes for General Services.
NF A 49-217 For Seamless Ferritic, Austenitic Stainless Steel Tubes For Heat Exchangers.
 JIS JIS G 3459 For Stainless Steel Pipes.
JIS G 3463 For Stainless Steel Boiler & Heat Exchanger Tubes.

Material Grades

MATERIAL UNS GRADE ASTM / ASME GRADE (TP) EQUIVALENT GRADE ( DIN / EN )
 AUSTENITIC S 30400 304 1.4301
S 30403 304 L 1.4306 / 1.4307
S 30409 304 H 1.4948
S 30400 / S 30403 304 / 304 L 1.4301 / 1.4306
S 31600 316 1.4401
S 31603 316 L 1.4404
S 31609 316 H 1.4919
S 31600 / S 31609 316 / 316 L 1.4401 / 1.4404
S 31635 316 Ti 1.4571
S 32100 321 1.4541
S 32109 321 H 1.4941
S 32100 / S 32109 321 / 321 H 1.4541 / 1.4941
 FERRATIC/MARTENSITIC S 40500 405 1.4002
S 41000 410 1.4006
S 43000 430 1.4016
 DUPLEX & Super Duplex S 31803 2205 1.4462
S 32750 2507 1.4410

SIZE RANGE

PRODUCT Size Range
OD (mm) Thickness (mm) Length (Meters)
 S.S. Seamless U-Tubes 12.70 mm - 50.80 mm 0.90 mm - 3.50 mm Up to 30 Mtr. (Dev.Length)
 S.S. Welded U-Tubes 12.70 mm - 50.80 mm 0.70 mm - 4.00 mm Up to 30 Mtr. (Dev.Length)

Manufacturing Process

APPLICATION OF PRODUCT

  • Chemical Industries
  • Petrochemical Industries
  • Refineries Plants
  • Fertilizers
  • Heat Exchangers
  • Condensers
  • General Piping
  • Pressure Vessels
  • Paper & Pulp Industries
  • Cement Industries
  • Pharmaceuticals
  • Dairy Industries
  • Food & Beverages
  • Pumps
  • Hydraulic Tubing
  • Architectural Furniture
  • Process Equipments
  • Oil & Gas Industries
  • Textile Industries
  • Engineering
  • Sugar Industries
  • Industrial Equipments
  • Machineries
  • Heat Exchangers
  • Instrumentations
  • Evaporators, Condensers
  • Automobiles
  • Construction