Jiangyin Donghao Stainless Steel Pipe Co., Ltd  
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This is more commonly referred to as a Bright Annealing (BA) finish. Material with a No. 1 finish is cold rolled using highly polished rolls in contact with the steel surface. This smooths and brightens the surface.

The smoothness and reflectiveness of the surface improves as the material is rolled to thinner and thinner sizes. Any annealing which needs to be done in order to effect the required reduction in gauge, and the final anneal, is effected in a very closely controlled inert atmosphere. No oxidation or scaling of the surface therefore occurs and there is no need for additional pickling and passivation.

The final surface developed can have "MIRROR" type finish similar in appearance to the highly polished No. 7 and No. 8 Finishes. Delivery Condition: Bright annealed or O/D polished (180,240,320,400 Grit)


Grade(UNS): Austenitic Stainless Steel:
304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404); 316Ti(1.4571); 321(1.4541); 309S (1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550);

Duplex Stainless Steel:
S32001, S32003, S31500, 2205(1.4462); S32304,(1.4362);S31803,2507 (S32750), S32760(1.4501);S32101(1.4162);

Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo (S31254, N08367)

Nickel Base Alloys:
Alloy 20 (UNS N08020), Monel 200 (UNS 02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825), Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276)

Martensitic Stainless Steel:410(1.4006), 410S(1.4000), 420(1.4021)

Ferritic Stainless Steel:405(1.4002), 430(1.4016)

Outside Diameter: 6 - 830mm
Wall Thickness: 0.50 - 60mm
Standards(Norm): EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455
GB/T14975; T14976; T13296; GB5310;
ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829
JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468
GOST 9940;GOST 9941;