A21Y-64P-DN25,A21W-40P-DN65,A21Y-100P-DN10,A21H-64C-DN25,A21F-16C-DN40,弹簧微启式外螺纹安全阀
A21Y-64P-DN10,kA21W-40P-DN50,A21Y-100P-DN25,A21W-16P-DN65,A21W-25P-DN32
A21W-25P-DN10,A21W-40P-DN25,A21W-40P-DN10,A21W-25P-DN50,A21W-16P-DN32,A21W-16P-DN20
A21W-16P-DN10,A21W-25P-DN20,无锡昌林，A21Y-160P-DN20,A21Y-160P-DN25,A21H-40R-DN15
A21H-160-DN25,A21H-320-DN10,A21H-320-DN25,A21H-160-DN20,A21H-160-DN10,A21H-64C-DN10,
A21H-64C-DN20,A21H-100-DN10,A21H-40-DN25,A21H-64C-DN15,A21H-40-DN40,A21H-25-DN40
A21H-40-DN20,A21H-25-DN15,A21H-16C-DN50,A21H-25-DN25,A21H-16C-DN20,A21H-16C-DN40
A21H-16C-DN32.A21W-16P-DN25,A21F-40P-DN10,A21F-40-DN40,A21F-40-DN50,A21F-40-DN32
A21F-40P-DN25,A21F-40-DN10,A21F-40-DN15,A21F-40-DN25,A21F-25-DN32,A21F-25-DN50
A21F-25-DN15,A21F-25-DN20,A21F-16C-DN25,A21F-16C-DN15,A21F-16C-DN10,A21W-25P-DN15
A21W-40P-DN20,A21W-16P-DN80,A21W-25P-DN65,A21W-40P-DN15,A21W-40P-DN32,A21W-16P-DN50
A21W-16P-DN40,A21W-25P-DN25,A21W-25P-DN40,A21W-16P-DN15,A21Y-64P-DN15,A21Y-100P-DN20
A21Y-100P-DN15,A21Y-320P-DN20,无锡昌林，A21W-25P-DN80,A21Y-160P-DN10,A21W-40P-DN40,A21W-40P-DN80
A21Y-320P-DN10,A21Y-160P-DN15,A21H-40-DN50,A21H-40-DN15,A21H-40-DN32,A21H-40-DN10
A21H-25-DN50,A21H-25-DN20,.A21H-25-DN32,A21H-25-DN10,A21H-16C-DN25,A21H-16C-DN10
A21H-16C-DN15,A21H-320-DN20,A21H-320-DN15,A21H-100-DN20,A21H-100-DN25,A21H-100-DN15
,A21F-25-DN40,A21F-25-DN25,A21F-40-DN20,A21F-16C-DN20,A21F-25-DN10
A21F-16C-DN50,A21F-16C-DN32，A21Y-64P-DN20,A21Y-320P-DN25,A21Y-320P-DN15，

产品介绍　
A21F、A21H-C型适用于工作温度≤200℃的空气、氨、石油气……等介质的设备或管路上。A21W-P、R型适用于温度≤200℃有腐蚀性的气体或液体的设备或管路上，作为超压保护装置。KA21Y型适用于温度≤100℃的液化石油气等。



A21H-160-DN25,A21H-320-DN10,A21H-320-DN25,A21H-160-DN20,A21H-160-DN10,A21H-64C-DN10,
A21H-64C-DN20,A21H-100-DN10,A21H-40-DN25,A21H-64C-DN15,A21H-40-DN40,A21H-25-DN40
A21H-40-DN20,A21H-25-DN15,A21H-16C-DN50,无锡昌林，A21H-25-DN25,A21H-16C-DN20,A21H-16C-DN40
A21H-16C-DN32.A21W-16P-DN25,A21F-40P-DN10,A21F-40-DN40,A21F-40-DN50,A21F-40-DN32
A21F-40P-DN25,A21F-40-DN10,A21F-40-DN15,A21F-40-DN25,A21F-25-DN32,A21F-25-DN50
A21F-25-DN15,A21F-25-DN20,A21F-16C-DN25,A21F-16C-DN15,A21F-16C-DN10,A21W-25P-DN15
A21W-40P-DN20,A21W-16P-DN80,A21W-25P-DN65,A21W-40P-DN15,A21W-40P-DN32,A21W-16P-DN50
A21W-16P-DN40,A21W-25P-DN25,A21W-25P-DN40,A21W-16P-DN15,A21Y-64P-DN15,A21Y-100P-DN20
A21Y-100P-DN15,A21Y-320P-DN20,A21W-25P-DN80,A21Y-160P-DN10,A21W-40P-DN40,A21W-40P-DN80
A21Y-320P-DN10,A21Y-160P-DN15,无锡昌林，A21H-40-DN50,A21H-40-DN15,A21H-40-DN32,A21H-40-DN10
A21H-25-DN50,A21H-25-DN20,.A21H-25-DN32,A21H-25-DN10,A21H-16C-DN25,A21H-16C-DN10
A21H-16C-DN15,A21H-320-DN20,A21H-320-DN15,A21H-100-DN20,A21H-100-DN25,A21H-100-DN15
A21H-64C-DN25,A21F-25-DN40,A21F-25-DN25,A21F-40-DN20,A21F-16C-DN20,A21F-25-DN10
A21F-16C-DN50,A21F-16C-DN40,A21F-16C-DN32,