The execution standards of butt welding flanges are: chemical standard HG20592-2010, national standard GB/T9119, petrochemical standard SH/T3046, mechanical standard JB/T81-94, etc. The nominal pressure level of the PN series is represented by PN, including the following nine levels: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, PN16.
Large diameter series, stainless steel series, carbon steel series, alloy steel series, our factory's main products include: neck flange, butt welding flange, plate flat welding flange, flat flange flat welding ring loose flange, Welding ring loose flange, integral flange, forged flange, flange cover, please call us for inquiries and look forward to cooperating with you.
The execution standards of butt welding flanges are: chemical standard HG20592-2010, national standard GB/T9119, petrochemical standard SH/T3046, mechanical standard JB/T81-94, etc. The nominal pressure level of the PN series is represented by PN, including the following nine levels: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, PN16.
The nominal pressure level of the Class series is represented by Class, including the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
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