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Shanghai Yaluo Precision Fastening Technology Co., Ltd.
上海亚螺精密紧固技术有限公司
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(GB 901 - 1988)
material
grade, rigidity
grade 9.8
Coating
other treatments
上海亚螺C3-80等长双头螺栓GB901订做热加工规范：冷装炉温≤800℃(热装炉温不限),开始温度1100～1150℃,终止温度>850℃,>50℃时在砂内缓冷。
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