... spring 3. Standards: ASTM, DIN, EN, BS, JIS, ISO 1.WASHER, galvanized or polished2.medium steel plate;durable and spring3. Standards ... : ASTM, DIN, EN, BS, JIS, ISO4.Material: 45# metal Low-carbon and mid-carbon steel5. Can be produced as per ... .Delivery time:Within 25 days after receiving the advance deposit WASHER