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Expansion Bolt

Expansion Bolt

Expansion bolt is a special threaded connector used to fix pipe support/hanger/bracket or equipment on walls, floors and columns. The grade of carbon steel bolts is divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 and 12.9.

ຕົວແບບ:SINSTON ZR199

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ຄໍາອະທິບາຍ: 

ຕົວຍືດຂະຫຍາຍເປັນຕົວເຊື່ອມຕໍ່ທີ່ມີຮູບແບບພິເສດທີ່ໃຊ້ໃນການແກ້ໄຂການສະຫນັບສະຫນູນທໍ່ / ຕົວຍຶດ / ຕົວຍຶດຫລືອຸປະກອນໃນຝາ, ຊັ້ນແລະຄໍລໍາ. ລະດັບຂອງ bolts ເຫຼັກຄາບອນແມ່ນແບ່ງອອກເປັນຫຼາຍກວ່າ 10 ຊັ້ນເຊັ່ນ: 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 ແລະ 12.9.

 

Numbers before and after decimal point indicate nominal tensile strength and yield-strength ratio of bolt material respectively. For example, labeled 8.8 grade bolt indicates that the tensile strength of material reaches 800MPa, and yield-strength ratio is 0.8, that is, its yield strength reaches 800x0.8=640MPa.


Stainless steel bolts can be classified into 45, 50, 60, 70 and 80 grades. The materials mainly include austenite A1, A2, A4, martensite and ferrite C1, C2 and C4. Their expressions, such as A2-70, and "before" and "after" respectively, indicate the bolt materials and strength grades.

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