... . Grade: 8.8,10.9,12.9 Tortous type high strength bolt,nut and washer for steel structures >> We manufacture ASTM E1852 ... ,10.9,12.9 5. Standard:ASTM E1852 & GB/T 3632 and DIN JIS AS GOST ASME. Also can be with customers ... ' drawings and requirements. 6. Payment:L/C,T/T >> Apply to railway, highway, bridge, boiler with ...