Metal Family: Aluminum Alloy: 7050 -T7452 Shape: Plate Size: 4.000" x 20.500" x 18.000" Finished Size, Rough Machined Quantity: 40.00 / 720.00 / PC Delivery: Unknown Specification: BMS7-214 TY II, USI BAC5439 CL A, cutting tolerance -0/+.250, do not forge in multiples in short transverse direction 需要有波音认证，或者达到这样的标准，CIF洛杉矶交货 这是美国波音要的，要江浙沪地区的