0086-537-3683554, 3473286
No. 1, Tiebei East Street, Yanzhou, Ji'ning, Shandong, China (Mainland)
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Buttress thread gauge, US $ 35 - 35 / Set, China, JM, 1/2-6.Source from Shandong Mingshi Mining Technology Co., Ltd. on Waimaotong.com.
Special Thread ring gauge
Stright pipe thread ring gauge with not thread sealing
Taper pipe R thread ring gauge
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