Size specification of large diameter electric welded steel pipe

Size specification of large diameter electric welded steel pipe

Standard nominal outer diameter of large diameter electric welded steel pipe D		Wall thickness S／mm
		4	4.5	5	5.5	6	7	8	10	11	12
(in)		Theoretical quality／(kg／m)
(6  5/8)	168.3	16.21	18.18	20.13	22.08	24.01
-7	177.8	17.14	19.23	21.3	23.37	25.42
(7  5/8)	193.7	18.71	20.1	23.27	25.52	27.8
(8  5/8)	219.1	21.22	23.81	26.4	28.97	31.53	36.61	41.63	51.56
(9  /8)	244.5	23.72	26.63	29.53	32.42	35.29	41	46.66	57.83
(10  3/4)	273			33.04	26.28	39.51	45.92	52.28	64.86
(12  3/4)	323.9			39.32	43.19	47.04	54.7	62.32	77.4l	84.88	92.3
-14	355.6				47.48	51.73	60.18	68.57	85.22	93.48	101.7
-16	406.4				54.37	59.24	68.94	78.59	97.75	107.3	116.7
-18	457.2				6l。26	66.76	77.71	88.62	110.3	121.4	131.7
-20	508				68.15	74.28	86.48	98.64	122.8	134.8	146.8

Note:
1. According to the requirements of the buyer and the agreement between the supplier and the buyer, steel pipes with a size between the outer diameter and wall thickness listed in the table can be supplied.
2. The allowable deviation of the outer diameter of the steel pipe shall not exceed ±0.8%D.
3. The allowable deviation of steel pipe wall thickness shall not exceed ±12.5％S.
4. The usual length of steel pipe is 6-12m. ...
5. The cut-to-length length of the steel pipe should be within the usual length range, and its allowable deviation is +20mm. + 0mm
6. The curvature of the steel pipe shall not be greater than 0.15% of the total length of the steel pipe.