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The
high intensity bolt manufactured
by our company with the adoption
of new technology is high in quality,
complete in specification and
low in price, which could be manufactured
as auxiliary parts for various
petroleum machines. The product
has been exported to America,
EU, and Australia, etc. The
types cover: M30 ¡Á 220¡¢ M33
¡Á 216¡¢ M42 ¡Á 150¡¢ M4 2¡Á220¡¢
M42¡Á340¡¢
M42¡Á700¡¢ M45 ¡Á 265¡¢ M45 ¡Á 385¡¢
M48 ¡Á 370¡¢ M48 ¡Á 450¡¢ M5 2¡Á365¡£
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Casing head series
