工作温度（℃）	最大允许工作压力（bar）
	Class150   (PN20)	Class300   (PN50)	Class600 (PN110)	Class900 (PN150)	Class1500 (PN260)	Class2500 (PN420)
≤38	19.0	49.6	99.3	148.9	248.2	413.7
50	18.7	48.8	97.5	146.3	243.8	406.4
100	17.4	45.3	90.6	135.9	226.5	377.4
150	15.8	42.5	84.9	127.4	212.4	353.9
200	13.8	39.9	79.9	119.8	199.7	332.8
250	12.1	37.8	75.6	113.4	189.1	315.1
300	10.2	36.1	72.2	108.3	180.4	300.7
325	9.3	35.4	70.7	106.1	176.8	294.6
350	8.4	34.8	69.5	104.3	173.8	289.6
375	7.4	34.2	68.4	102.6	171.0	285.1
400	6.5	33.9	67.8	101.7	169.5	282.6
425	5.5	33.6	67.2	100.8	168.1	280.1
450	4.6	33.5	66.9	100.4	167.3	278.8
475	3.7	31.7	63.4	95.1	158.2	263.9
500	2.8	28.2	56.5	84.7	140.9	235.0
538	1.4	25.2	50.0	75.2	125.5	208.9
550	—	25.0	49.8	74.8	124.9	208.0
575	—	24.0	47.9	71.8	119.7	199.5
600	—	21.6	42.9	64.2	107.0	178.5
625	—	18.3	36.6	54.9	91.2	152.0
650	—	14.1	28.1	42.5	70.7	117.7
675	—	12.4	25.2	37.6	62.7	104.5
700	—	10.1	20.0	29.8	49.7	83.0
725	—	7.9	15.4	23.2	38.6	64.4
750	—	5.9	11.7	17.6	29.6	49.1
775	—	4.6	9.0	13.7	22.8	38.0
800	—	3.5	7.0	10.5	17.4	29.2
816	—	2.8	5.9	8.6	14.1	23.8