OD			W/T
inch	DN	mm	inch	mm
1/2"	15	21.3		1.8-3.73
3/4"	20	26.7		1.8-3.91
1"	25	33.4		2.77-4.55
1-1/4"	32	42.2		2.77-4.85
1-1/2"	40	48.3		2.77-5.08
2"	50	60.3		2.77-5.54
2-1/2"	65	73	0.109-0.188	2.77-4.78
3"	80	88.9	0.109-0.216	2.77-5.49
3-1/2"	90	101.6	0.109-0.216	2.77-5.49
4-1/2"	100	114.3	0.125-0.250	3.18-6.35
5-1/2"	125	139.7	0.138-0.311	3.51-7.90
5-6/9"	125	141.3	0.138-0.311	3.51-7.90
6 5/8	150	168.3	0.138-0.335	3.51-8.51
7"	165	177.8	0.138-0.354	3.51-8.99
7-5/8"	180	193.7	0.138-0.354	3.51-8.100
8-5/8"	200	219.1	0.138-0.500	3.51-12.7

ANSI C80.1 C80.3
ASTM F1083 Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized) Welded, for Fence Structures
BS EN1139-1.1 Metal Scaffolding-Part 1: Tubes-Section 1-Specification for Steel Tube
BS EN 1139-5 Metal scaffolding - Specification for materials, dimensions, design loads and safety requirements for service and working scaffolds made of prefabricated elements)
BS EN 1775-2007 Gas supply - gas pipework for buildings - maximum operating pressure less than or equal to 5 bar - functional recommendations,
BS1387 Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized) Welded
AS/NZS 1576.3 Scaffolding - Part 3:Prefabricated and Tube-and-Coupler Scaffolding
AS/NZS 1576.2-2009 Scaffolding - Couplers and accessories
BS21
DIN2440
DIN2445
DIN2444
EN10220,
EN10240,
10255,
EN10219,
EN39
AS1163,
AS1074,
AS2556;
JISG3444
JIS3446
ISO1464
ASTM A123
ASTM A153
ASTM A767
ASTM A394
ASTM A90
ASTM E376
ASTM A780
ASTM A143
BS729:1971
JIS H 8641
GOST 3262-75 Steel ungalvanized and galvanized welded pipes – commercial, reinforced and light, plane and threaded, used for water and gas supply, heating systems and design detail(Size 8-100 mm)
General Purpose Round Hollow Sections-TS EN 10305-3, DIN 1615, DIN 2458, DIN 2394 -1, DIN 2394-2, BS 6263, ASTM A500, EN 10219 – ½
Water Pipes-TS EN 10255, TS EN 10217, DIN 2440, BS 1387, ASTM A53, ISO 65
Square and Rectangular Profiles-TS EN 10305-5,DIN 2395-1/2, BS 6363, ASTM A500, EN 10219-1/2
Oval Profiles-TS EN 10305-3
Towel Warmer Tubes-TS EN 10305-3
Pre-Galvanized Pipes and Profiles-TS EN 10219-2
D Profiles-TS EN 10305-3
Antirust Painted Products-TS EN 10305-5S4, TS EN 10305/3, DIN 2395-1, DIN 2395-2, EN 10219-2, BS 6363, ASTM A500
Scaffolding Pipes-EN 39
ТU 14-3Р-26-99 Electric-high-frequency-welded longitudinal seam steel pipe 42 – 159 mm in outside diameter intended for conveying gas and oil. -К42, К50, К52, К56
ТU 14-3Р-33 Electric-high-frequency-welded longitudinal seam steel non-full body and full-body heat-treated higher quality pipe 42 – 168 mm in outside diameter in standard and cold-resistant models intended for conveying gas and oil-К42, К50, К52, К56