St35.8 / St52 Seamless Boiler Steel Tubes

Specification range: Heat treatment: BK, BKS, GBK, NBK, Stress Relief, Normalizing, Spheroidize Anneal, Annealing, OD: 1/4"-12"

Executive Tube Standard: JIS G3461 Carbon steel boiler and heat-exchanger tube Product particular communication: 1) Size: OD > 6 mm & THK > 0.5mm; 2) Tight tolerance, Smooth surface, Uniform mechanical property(Mechanical Properties equilibrium); 3) Heat treatment: BK, BKS, GBK, NBK, Stress Relief, Normalizing, Spheroidize Anneal, Annealing, Bright Annealing, Normalized, Quenched and Tempered, Solution Annealing, etc; 4) Continuous stenciling as required; 5) Rust prevention treatment, such as: Immersion oil, lacquer, passivation, phosphating, etc; 6) Plastic plugs or caps on both ends as required; 7) Packing Type: Round, Square, Rectangle, Hexagon. Streamline, etc. 8) Relevant Test: Chemical Component Analysis, Mechanical Properties(Ultimate tensile strength, Yield strength, Elongation), Technics Properties(Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, etc), Exterior Size Inspection, Nondestructive Test, Hydrostatic Test; 9) Main Applications: Boiler and Heat Exchanger, Hydraulic and Petrochemical Purpose, etc. Commercial Information: 1) Delivery: Within 30 days; 2) Min Order: 5 Tons; 3) Packing way: As per our export standard for shipment; 4) Term of payment: 30% T/T within 3 days after signing the contract, balance 70% before shipment. Or 30%T/T +70% irrepealable L/C; 5) Delivery Port: Shanghai Port; 6) Offer Validity: 5-7 Days; 7) Container: 20' or 40', etc; 8) Manufacture methods: Cold Finished and Hot Finished.

St35.8 / St52 Seamless Boiler Steel Tubes