Full thread studbolts are made by cutting all thread rod to length or roll-threading pitch diameter cut blanks.
Grade b7 according to astm a193 is the most popular grade. For the matching heavy hex nuts is grade 2h according to astm a194 the most popular grade.
Material: Alloy steel, quenched and tempered
Specials: Studbolts and heavy hex nuts with a corrosion resistant surface treatment such as black oxide, zinc plated, hot dip galvanised, xylan etc. Can be supplied on request.
双头螺栓
1.美制双头螺栓及螺母(ASTM A193 B7 &A194 2H)
2.法兰用螺栓对照表（ANSI B 16.5)
材质：ASTM A193 Gr B7 B8 B8M B16 B6 B5 B8T B8MA(用于高温 高压环境下的螺栓）
ASTM 320-L7 L7M L43 B8 B8M B8T B8MA(用于低温环境的螺栓）
ASTM A194 Gr 2H 2HM 3 4 6 7 7M 8 8A 8M 8C 8CA 8T(用于高温 高压环境的螺母）
超级合金钢，包括：Hastelloys Incoloys Inconels Monel 400 Monel k500&UNS SC31803.
螺栓及螺母材质要求
螺栓及螺母机械性能要求
法兰用螺母尺寸对照表（ANSI B 16.5)
表面处理：电镀锌 热浸镀锌 热浸镀铝 达克罗涂覆 镀镉 聚四氟乙烯涂层 Xylan涂层
