2017 wholesale price ASTM A193 B7 All Threaded Stud Bolts to Oslo Factories

ASTM A193/A193M B7 All Threaded Stud Bolts

API 6A 6D Flange Valve Wellhead ASME/ANSI Flange All Thread Stud Bolts

Alloy steel bolting for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.

Standard: IFI-136, ASME B16.5, DIN976

Inch Size: 1/4”-4” with various lengths

Metric Size: M6-M100 with various lengths

Other Available Grade:

ASTM A193/A193M B7, B7M, B16, B8 Class 1 & 2, B8M Class 1 & 2,

ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on.

Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc.

Packing: Bulk about 25 kgs each carton, 36 cartons each pallet

Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports

Please feel free to contact us for more details.


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    In this electron beam welding video what you are seeing is a weld segment of an alloy-steel cooling channel application split into two separate video feeds as displayed to the weld operator.

    1. The first feed (left) shows a dry weld run without the cooling channel cover affixed on the part to display the complicated weld path.
    2. The other feed (right) is the same time period within the CNC program, this time with the cooling channel cover on and fully assembled, showing the actual blind EB weld pass.

    You will notice occasional features adjacent to the weld such as the hold down bolts that come into very close proximity to the weld pass but remain unaffected due to EBW’s low heat input.