The products are widely used in petroleum, chemical industry, light industry, electric power, metallurgy, shipbuilding, construction and other industries, products are sold throughout the country and exported to Korea, Singapore, Malaysia, Saudi Arabia, Thailand, United States, Pakistan, Bangladesh, Syria, Iran and other countries, in the domestic and foreign brand products in the market enjoy a good reputation.
The company has a quality testing center, the use of GB/T19001/2000 standards, through the national quality supervision, inspection and quarantine organization of the pressure pipe fittings inspection, issued a special equipment manufacturing license. Our company approved by the State Quality Supervision Bureau of production enterprises, is a collection of scientific research, production, sales as one of the integrity of the enterprise.
Japan application standard system (JIS)
Tube: large outer diameter series (JIS G3454, JIS G3458, JIS G 3459) with the ANSI most of the same;
Seamless steel pipe nominal diameter: (DN6~DN650) mm thickness representation: schedule number "Sch" indicates the wall thickness;
Nominal diameter of steel pipe welding: (DN350~DN2000) mm thickness representation method: direct with wall thickness values.
Pipe flange: (JIS B2201, JIS B2220, etc.) from the system, neither belongs to the American flange, does not belong to the European flange";
Nominal diameter: (DN10~DN1000) mm;
Nominal pressure level: 2K, 5K, l0K, 16K, 20K, 30K, 40K, 63K a total of 8 grades;
Flange sealing surface: smooth surface, large convex table, small convex table, concave convex surface, 5 kinds of tongue and groove face;
Flange type: flat type, socket welding, butt welding, threaded connection, flange cover and sleeve type 6.
JIS application standard system and ANSI and DIN can not be used. In order to make up for this defect, the Japan Petroleum Institute compiled a set of JPI standards, which basically equivalent to the use of the ANSI/API application standard system, so it can swap with ANSI.
The standard used in the Japanese standard system JIS:
An JIS G3458 alloy steel
An JIS G3459 stainless steel
An JIS G3468 large diameter stainless steel welded pipe
An JIS B2201 ferrite material pipe flange pressure rating
An JIS B2202 pipe flange size
An JIS B2210 ferrite material pipe flange size of foundation
Sales of JIS B2220 steel pipe flanges
Sales of JIS B2302 steel pipe thread connection
An JIS B2311 general purpose steel pipe fittings
Sales of JIS B2312 steel pipe fittings
Sales of JIS B2313 steel pipe fittings
With an JIS B2404 type winding pad flange pipe