List of dimensional standards
Standard | Dimensional standard | - description | Application | SIZES (OD x WT) dimensional table |
---|---|---|---|---|
API | API 5CT | Specification for casing and tubing. | - casing and tubing | 26.7 x 2.87 - 114.3 x 8.56 mm [1.050 x 0.113 - 4.500 x 0.337 in] |
API | API 5L (EN 10220) | Specification for line pipe. | - line pipe | 10.3 x 1.7 - 114.3 x 13.49 mm [0.405 x 0.068 - 4.500 x 0.531 in] [1/8 - 4 1/2 NSD] |
ASME | ANSI B36.10 | Welded and seamless wrought steel pipe. | for low temperature pressure services | 10.3 x 1.24 - 114.3 x 13.49 mm [0.405 x 0.049 - 4.500 x 0.531 in] [1/8 - 4 NPS] |
ASME | ASME B16.9 | Factory-made wrought steel buttwelding fitting. | elbows for low temperature | 33.4 x 3.38 - 114.3 x 6.02 mm [1.315 x 0.133 - 4.5 x 0.237 in] [1 - 4 NPS] |
ASME | SA334 | Seamless and welded carbon and alloy-steel tubes for low-temperature service. | for low temperature pressure services | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASME | SA53 | Pipe, steel, black and hot-dipped, zinc-coated, welded seamless. | suitable for welding or threading | 10.3 x 1.24 - 114.3 x 13.49 mm [0.405 x 0.049 - 4.500 x 0.531 in] [1/8 - 4 NPS] |
ASTM | A161 | Seamless low-carbon and carbon-molybdenum steel tubes for refinery service. | for heat exchangers | 12.70 x 0.89 - 76.20 x 5.59 mm [0.500 x 0.035 - 3.000 x 0.220 in] [20 - 5 BWG] |
ASTM | A179 | Seamless cold drawn low-carbon steel heat exchanger and condenser tubes. | for heat exchangers | 12.70 x 0.89 - 76.20 x 5.59 mm [0.500 x 0.035 - 3.000 x 0.220 in] [20 - 5 BWG] |
ASTM | A192 | Seamless carbon steel boiler tubes for high-pressure service. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A199 | Seamless cold drawn intermediate alloy steel heat exchanger and condenser tubes. / General requirements for carbon, ferritic alloy and austenitic alloy steel tubes. | for heat exchangers | 12.70 x 0.89 - 76.20 x 5.59 mm [0.500 x 0.035 - 3.000 x 0.220 in] [20 - 5 BWG] |
ASTM | A209 | Seamless carbon-molybdenum alloy-steel boiler and superheater tubes. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A210 | Seamless medium-carbon steel boiler and superheater tubes. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A213 | Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A334 | Seamless and welded carbon and alloy-steel tubes for low-temperature service. | for low temperature pressure services | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A335 | Seamless ferritic alloy-steel pipe for high-temperature service. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A519 | Seamless carbon and alloy steel mechanical tubing. | for standard use | 6.35 x 0.51 - 120.65 x 9.53 mm [0.250 x 0.020 - 4.750 x 0.375 in] [25 - 3/8 GA] |
ASTM | A53 | Pipe steel, black and hot-dipped, zinc-coated, welded seamless. | suitable for welding or threading | 10.3 x 1.24 - 114.3 x 13.49 mm [0.405 x 0.049 - 4.500 x 0.531 in] [1/8 - 4 NPS] |
ASTM | A556 | Seamless cold drawn carbon steel feedwater heater tubes. | for high-pressure service - boiler | 31.75 x 2.34 - 139.7 x 12.7 mm [1.250 x 0.088 - 5.500 x 0.500 in] [13 - 7/0 GA] |
ASTM | A795 | Black and hot-dipped zinc-coated (galvanized) welded and seamless steel pipe for fire protection use. | suitable for welding or threading | 10.3 x 1.24 - 114.3 x 13.49 mm [0.405 x 0.049 - 4.500 x 0.531 in] [1/8 - 4 NPS] |
ASTM | A822 | Seamless cold drawn carbon steel tubing for hydraulic system service. | for pressure hydraulic and pneumatic lines - HPL | 6.35 x 0.51 - 120.65 x 9.53 mm [0.250 x 0.020 - 4.750 x 0.375 in] [25 - 3/8 GA] |
ASTM | ANSI B16.9 | Factory-made wrought steel buttwelding fitting. | elbows for elevated temperature | 33.4 x 3.38 - 114.3 x 6.02 mm [1.315 x 0.133 - 4.5 x 0.237 in] [1 - 4 NPS] |
ASTM | ANSI B36.10 | Welded and seamless wrought steel pipe. | for high-pressure service - boiler | 10.3 x 1.24 - 114.3 x 13.49 mm [0.405 x 0.049 - 4.500 x 0.531 in] [1/8 - 4 NPS] |
BS | 1387 | Screwed and socketed steel tubes and tubulars for plain end steel tubes suitable for welding or screwing to BS 21 pipe threads. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
BS | 1965-1 | Buttwelding pipe fittings for pressure purposes. Carbon steel. | elbows for elevated temperature | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
BS | 3059-1 | Steel boiler and superheater tubes. Specification for low tensile carbon steel tubes without specified elevated temperature properties. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 3059-2 | Specification for carbon, alloy and austenitic steel tubes with specified elevated temperature properties. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 3600 | Dimensions and masses per unit lenght of seamless and welded steel tubes for pressure purposes. | for low temperature pressure services | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 3602-1 | Steel pipes and tubes for pressure purposes: carbon and carbon manganese steel with specified elevated temperature properties. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 3604-1 | Steel pipes and tubes for pressure purposes: ferritic alloy steel with specified elevated temperature properties. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 3606 | Steel tubes for heat exchangers. | for heat exchangers | 4.0 x 0.5 - 125.0 x 12.5 mm |
BS | 6323-3 | Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
BS | 6323-4 | Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes. | for standard use | 4.0 x 0.5 - 120.0 x 13.0 mm |
BS | 7416 | Precision finished seamless cold drawn low carbon steel tubes for use in hydraulic fluid power systems. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
ČSN | 13 2200 | Steel buttwelding fittings. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
ČSN | 13 2385 | Reducers DN 20 - DN 500, PN 40 - PN 100. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
ČSN | 42 5710 | Steel tubes suitable to screwing. Medium series. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
ČSN | 42 5711 | Steel tubes suitable for screwing. Heavy series. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
ČSN | 42 5715 | Hot formed seamless steel tubes. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
ČSN | 42 5716 | Hot formed seamless steel tubes with smaller tolerances. | for structural purposes | 10.2 x 0.5 - 139.7 x 16.0 mm |
ČSN | 42 6710 | Cold drawn seamless tubes with normal tolerances from steel class 11 - 16. | for heat exchangers | 4.0 x 0.5 - 125.0 x 12.5 mm |
ČSN | 42 6711 | Precision seamless steel tubes. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
ČSN | 42 6712 | Precision seamless steel tubes with increased accuracy. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
ČSN | by customers specification | for bearings | 22.0 x 3.0 - 70.0 x 8.0 mm | |
DIN | 2391 | Seamless precision steel tubes. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
DIN | 2391-1 | Seamless precision steel tubes. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
DIN | 2440 | Steel tubes, medium weight suitable for screwing. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
DIN | 2441 | Steel tubes, heavy-weight suitable for screwing. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
DIN | 2442 | Threaded tubes made to quality specifications. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
DIN | 2445-2 | Seamless steel tubes for dynamic loads. Steel tues for precision application in fluid systems PN 100 to PN 500. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
DIN | 2448 | Plain end seamless steel tubes. | from fine grain steel | 4.0 x 0.5 - 125.0 x 12.5 mm |
DIN | 2460 | Steel tubes for waterworks services. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
DIN | 2605-1 | Elbows. 1- Reduced correlation uf utilaization. 2 - Full correlation of utilaization. | elbows for water and gas pipe line | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
DIN | 2605-1, 2 | Elbows. 1- Reduced correlation uf utilaization. 2 - Full correlation of utilization. | elbows for elevated temperature | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
DIN | 2616-2 | Buttwelding fittings and reducers. Full correlation of utilization. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
DIN | 28180 | Seamless steel tubes for tubular heat exchangers. | for heat exchangers | 16.0 x 1.2 - 51 x 5 mm |
DIN | by customers specification | for bearings | 22.0 x 3.0 - 70.0 x 8.0 mm | |
EN | 10210-2 (10220) | Hot finished structural hollow sections of non-alloy and fine grain stuctural steel. | for structural purposes | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10216-1 (10220) | Seamless steel tubes for pressure purposes. Unalloyed steel tubes with specified room temperature properties. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10216-2 (10220) | Seamless steel tubes for pressure purposes. Part 2 - Non-alloy and alloy steel tubes with specified elevated temperature properties. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10216-3 (10220) | BSeamlees steel tubes for pressure purposes. Part 3 - Non-alloy and alloy fine grain steel tubes. | from fine grain steel | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10216-4 (10220) | Seamless steel tubes for pressure purposes. Part 4 - Non-alloy and alloy steel tubes with specified low temperature properties. | for low temperature pressure services | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10224 (10220) | Steel pipes, joints and fittings for the conveyance of aqueous liqiuds including potable water. | suitable for welding or threading | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10253-1 | Buttwelding pipe fittings. Part 1 - Wrought carbon steel for general use and without specific inspection requirements. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
EN | 10253-2 | Buttwelding pipe fitting. Part 2 - Wrought carbon and ferritic alloy steels with specific inspection requirements. | elbows for room temperature service | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
EN | 10255 | Non-alloy steel tubes suitable for welding or threading. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
EN | 10294-1 | Hollow bars for machining. Part 1: Non-alloy and alloy steel. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10297-1 (10220) | Seamless steel tubes for mechanical and general engineering purposes. Part 1 - Non-alloy and alloy steel tubes. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
EN | 10305-1 | Steel tubes for precision applications. Part 1 - Seamless cold drawn tubes. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
EN | 10305-4 | Steel tubes for precision applications. Part 4 - Seamless cold drawn tubes for hydraulic and pneumatic power system. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
EN ISO | ISO 3183 (EN 10220) | Steel pipes for pipelines transportation systems. | - line pipe | 10.2 x 0.5 - 139.7 x 16.0 mm |
GOST | 1060 | Cold deformed seamless steel tubes for shipbuilding. | for heat exchangers | 4.0 x 0.5 - 125.0 x 12.5 mm |
GOST | 12132 | Electrowelded and seamless steel tubes for automotive and bicycle industries. | for standard use | 4.0 x 0.5 - 120.0 x 10.0 mm |
GOST | 3262 | Water and gas supply steel pipes. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
GOST | 8732 | Seamless hot-formed steel pipes. | for structural purposes | 20.0 x 2.5 - 140.0 x 16.0 mm |
GOST | 8734 | Seamless steel tubes cold deformed. | for standard use | 4.0 x 0.5 - 120.0 x 10.0 mm |
GOST | 9567 | Precision steel tubes. Range. | for standard use | 4.0 x 0.5 - 120.0 x 10.0 mm |
GOST | TU 14-3-460 | Seamless steel tubes for boiler and pipelines. | for high-pressure service - boiler | 4.0 x 0.5 - 125.0 x 12.5 mm |
JIS | G3445 | Carbon steel tubes for machine structural purposes. | for standard use | 15.9 x 1.2 - 114.3 x 9.5 mm |
JIS | G3454 | Carbon steel pipes for pressure service. | for room temperature pressure service | 10.5 x 1.7 - 114.3 x 9.5 mm |
JIS | G3455 | Carbon steel pipes for high pressure service. | for room temperature pressure service | 10.5 x 1.7 - 114.3 x 9.5 mm |
JIS | G3456 | Carbon steel pipes for high temperature service. | for high-pressure service - boiler | 10.5 x 1.7 - 114.3 x 9.5 mm |
JIS | G3458 | Alloyed steel tubes. | for high-pressure service - boiler | 10.5 x 1.7 - 114.3 x 9.5 mm |
JIS | G3461 | Carbon steel boiler and heat exchanger tubes. | for high-pressure service - boiler | 15.9 x 1.2 - 114.3 x 9.5 mm |
JIS | G3462 | Alloy steel boiler and heat exchanger tubes. | for high-pressure service - boiler | 15.9 x 1.2 - 114.3 x 9.5 mm |
JIS | JOHS-102 | Carbon steel precision tubes for hydraulic line service. | for pressure hydraulic and pneumatic lines - HPL | 10.5 x 1.7 - 114.3 x 9.5 mm |
NF A | 49-112 | Steel tubes. Plain end seamless hot rolled tubes with specified room temperature properties and with special delivery conditions. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
NF A | 49-115 | Steel tubes. Hot finished seamless tubes suitable for screwing. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
NF A | 49-186 | Tubular accesories. Bends, reductions for welding, made from seamless tubes for general use. Dimensions. TDC. | elbows for room temperature service | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
NF A | 49-210 | Cold drawn seamless steel tubes for liquid transport. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
NF A | 49-211 | Steel tubes. Seamless plain-end unalloyed steel tubes for fluid piping at elevated temperatures. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
NF A | 49-213 | Steel tubes. Seamless unalloyed and Mo and Cr-Mo alloyed steel tubes for use at high temperatures. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
NF A | 49-215 | Seamless tubes for ferritic non-alloy and alloy steel heat exchangers. | for heat exchangers | 4.0 x 0.5 - 125.0 x 12.5 mm |
NF A | 49-281 | Tubular accesories. Bends, reductions for welding, made from seamless tubes with quality specifications. Dimensions. TDC. | elbows for room temperature service | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
NF A | 49-310 | Steel tubes - Seamless precision tubes for mechanical application. | for standard use | 4.0 x 0.5 - 120.0 x 13.0 mm |
NF A | 49-311 | Steel tubes. Seamless tubes for mechanical application. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
NF A | 49-312 | Seamless steel tubes with improved machinability for mechanical machined parts. | for standard use | 4.0 x 0.5 - 120.0 x 13.0 mm |
NF A | 49-330 | Seamless cold drawn tubes for hydraulic and pneumatic power systems. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
NF A | 49-501 | Steel tubes. Seamless or welded hot finished structural hollow sections. | for structural purposes | 10.2 x 0.5 - 139.7 x 16.0 mm |
PN - H | 74219 | Hot rolled sealmess steel tubes for structural and distribution purposes. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
PN - H | 74220 | Seamless steell cold drawn tubes for general purposes. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
PN - H | 74240 | Seamless cold drawn precision steel tubes. | for standard use | 4.0 x 0.5 - 120.0 x 13.0 mm |
PN - H | 74245 | Hot rolled or cold drawn steel tubes for specific use. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
PN - H | 74252 | Seamless boiler steel tubes. | for high-pressure service - boiler | 10.2 x 0.5 - 139.7 x 16.0 mm |
PN ŽP | ŽP 42 5760 | Buttwelding elbows. | elbows for water and gas pipe line | 21.3 x 2.0 - 168.3 x 4.50 mm [15 - 150 DN] [1/2 - 6 NPS] |
STN | 13 2200 | Steel buttwelding fittings. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
STN | 13 2385 | Reducers DN 20 - DN 500, PN 40 - PN 100. | butt welding reducers | 26.9 x 2.3 - 114.3 x 3.60 mm [20 - 100 DN] [3/4 - 4 NPS] |
STN | 42 5710 | Steel tubes suitable to screwing. Medium series. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
STN | 42 5711 | Steel tubes suitable for screwing. Heavy series. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
STN | 42 5715 | Hot formed seamless steel tubes. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
STN | 42 5716 | Hot formed seamless steel tubes with smaller tolerances. | for room temperature pressure service | 10.2 x 0.5 - 139.7 x 16.0 mm |
STN | 42 6710 | Cold drawn seamless tubes with normal tolerances from steel class 11 - 16. | for low temperature pressure services | 4.0 x 0.5 - 125.0 x 12.5 mm |
STN | 42 6711 | Precision seamless steel tubes. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
STN | 42 6712 | Precision seamless steel tubes with increased accuracy. | ready to use - HP | 48.0 x 4.0 - 130.0 x 10.0 mm |
STN | by customers specification | for bearings | 22.0 x 3.0 - 70.0 x 8.0 mm | |
UNI | 4991 | Seamless and welded steel tubes with plain ends. Dimensions. | for low temperature pressure services | 10.2 x 0.5 - 139.7 x 16.0 mm |
UNI | 6363 | Seamless and welded steel tubes sfor waterwork services. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
UNI | 7088 | Unalloyed steel seamless tubes - Plain gas tubes for high pressure. | - line pipe | 10.2 x 0.5 - 139.7 x 16.0 mm |
UNI | 7287 | Seamless plain end tubes made from basis non-alloy steel. | - line pipe | 10.2 x 0.5 - 139.7 x 16.0 mm |
UNI | 7729 | Unalloyed seamless steel tubes - plain end tubes for mechanical application. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |
UNI | 7945 | Plain end seamless precision steel tubes. | for pressure hydraulic and pneumatic lines - HPL | 4.0 x 0.5 - 80.0 x 12.5 mm |
UNI | 8863 | Seamless non-alloy steel tubes suitable for threading in accordance with UNI ISO 7/1. | suitable for welding or threading | 9.8 x 2.0 - 113.1 x 5.40 mm [1/8 - 4 NPS] [6 - 100 DN] |
UNI | ISO 1129 | Steel tubes for boilers, superheaters and heat exchangers. | for heat exchangers | 4.0 x 0.5 - 125.0 x 12.5 mm |
UNI | ISO 4200 | Plain end steel tubes, welded and seamless. General dimensions and masses per unit length. | for mechanical treatment - machine parts and general use | 10.2 x 0.5 - 139.7 x 16.0 mm |