Successful Delivery of Bright Annealed Stainless Steel Tubes Order

We are pleased to announce that we have successfully delivered a batch of high-quality bright annealed seamless stainless steel tubes. These tubes will be used to manufacture heat exchangers.

Bright Annealing Process

BA is the abbreviation of Atmosphere Protected Heat Treatment (Bright Annealed). The bright annealing process uses argon or hydrogen as the furnace atmosphere at high temperatures; through the argon or hydrogen and the surface of the steel tube, carbon and oxygen combination combustion to further clean the surface of the steel pipe in order to produce a bright effect. This way of using pure argon or hydrogen annealing heating and rapid cooling is called bright annealing.

Common Name: Stainless Steel BA Tubes, Bright Annealed Tubes, Seamless Tubes, Gas Line Tubes, Clean Tubes, Tubing, High Purity Gas Line Tubing.
Material: 304/304L, 316/316L
Standard: ASTM A249, A269, A270, ASTM A213, 3A and BPE standard, G3459, JIS G3447.
Forming method: mainly multi-roll cold rolling, the dimensional accuracy of the tubes can reach 0.2%, and the inner surface roughness of the tubes can reach Ra<0.45um.
Features: Dimensional precision, overall cleanliness, smooth surface, and internal surface cleanliness superior to unpolished tubing.
Raw Material: Use ingots that have been melted twice in a furnace to meet ASTM A269 standards.

Manufacturing method: Through cold rolling + fine drawing, the dimensional accuracy can reach about 0.05mm, and the inner surface roughness Ra can reach about 0.4μm.
Heat treatment: Bright solutioning (annealing) under the protection of reducing atmosphere such as Hydrogen.
Cleaning: Ultrasonic cleaning with SC2286 cleaning agent, that is, degreasing and oil removal process.
Inspection: Hydrostatic Test + Eddy Current Test and other NDE Tests.
Finishing: Straightening + Polishing + Sizing.
Packing: Spray code + PE Bags + Plastic Caps + Shock Absorbing Packaging + Dustproof Packaging + Plywood/Steel-framed Boxes.
Use: Special gas or liquid transportation; Masterbatch for the Production of EP Tubing.

Applicable Industries

Biopharmaceutical, electronic clean room factory, high-purity gas, high requirements, clean laboratory, solar photovoltaic, liquid crystal display, polysilicon, and other fields. Semiconductor industry, pharmaceutical industry, liquid crystal industry, compressed air, instrumentation systems, ultra-high purity gases, chemical systems, WFI systems, and other gas piping systems with high purity and ultra-high purity requirements or clean room or equipment aspects.

If you have any requirements for BA and EP tubes, please feel free to contact us at [email protected] for a competitive quote.