管件尺寸換算以及大小頭的口徑

［河圣天管件］管件尺寸換算以及大小頭的尺寸英寸：英文為：inch，復數(shù)形式為：inches，用倆瓶表示，如5英寸，可表示為：5inches或5"。英尺：英文為：foot，復數(shù)形式為：feet，用一瓶表示，如5英尺，可表示為：5feet或5'。換算為：1inch=2.54cm=25.4mm1foot=12inches=30.48cm=304.8mm國內標準6分外徑無縫25直逢28, 1寸的是32, 1.5寸48是無縫50是直逢,2寸的60,2.5的是73, 3寸是89,四寸是114.3, 6寸是168.3國外對應標準:公稱通徑(NB)inchDN公稱外徑(OD)mm1/2"1521.33/4"2026.71"2533.411/4"3242.211/2"4048.32"5060.321/2"65733"8088.94"100114.35"125139.86"150168.38"200219.1公稱通徑是管系統(tǒng)中所有管附件用數(shù)字表示的尺寸，公稱通徑是供參考用的一個方的圓整數(shù)，與加工尺寸僅呈嚴格的關系。公稱通徑用字母“DN后面緊跟一個數(shù)字標志。公稱通徑(nominaldiameter)，又稱平均外徑(meanoutsidediameter)。這是緣自屬管的管璧很薄，管外徑與管內徑相差無幾，所以取管的外徑與管的內徑之平均值當作管徑稱呼。DN是公稱通徑，公稱通徑(或叫公稱直徑)，就是各種管子與管附件的通用口徑。同一公稱直徑的管子與管附件均能相互連接，具有互換性.它是實際意義上的管道外徑或內徑，雖然其數(shù)值跟管道內徑較為接近或相等；為使管子、管件連接尺寸統(tǒng)一，采用公稱直徑(也稱公稱口徑、公稱通徑)。如焊接鋼管按厚可分為薄璧鋼管、普通鋼管和加厚鋼管。其公稱直徑是外徑，也是內徑，而是近似普通鋼管內徑的一個名義尺寸。每一公稱直徑，對應一個外徑，其內徑數(shù)值隨厚同而同。公稱直徑可用公制mm表示，也可用英制in表示。管附件也用公稱直徑表示，意義同有逢管。一般來說，管子的直徑可分為外徑、內徑、公稱直徑。管材為無縫鋼管的管子的外徑用字母D來表示，其后附加外直徑的尺寸和璧厚，如外徑為108的無縫鋼管，璧厚為5MM，用D108*5表示，塑管也用外徑表示，如De63,其他如鋼筋混凝土管、鑄鐵管、鍍鋅鋼管等采用DN表示，在設計圖紙中一般采用公稱直徑來表示，公稱直徑是為設計制造和維修的方人為地規(guī)定的一種標準，也較公稱通徑，是管子（或者管件）的規(guī)格名稱。管子的公稱直徑和其內徑、外徑相等，如：公稱直徑為100MM的無縫鋼管有102*5>108*5等好幾種，108為管子的外徑，5表示管子的璧厚，因此，該鋼管的內徑為（108-5-5）=98MM，但是它完全等于鋼管外徑減兩倍璧厚之差，也可以說，公稱直徑是接近于內徑，但是又等于內徑的一種管子直徑的規(guī)格名稱，在設計圖紙中所以要用公稱直徑，目的是為根據公稱直徑可以確定管子、管件、閥門、法蘭、墊片等結構尺寸與連接尺寸，公稱直徑采用符號DN表示，如果在設計圖紙中采用外徑表示，也應該作出管道規(guī)格對照表，表明某種管道的公稱直徑，璧厚。［河圣天管性］異徑管的尺寸表公稱通徑坡口處外徑端面至端面的距離NominalDiameterOutsideDiameterEndtoEndD1*D2DNNPSA系B系H20x153/4x1/226.9x21.325x183820x103/4x3/826.9x17.325x143825x201x3/433.7x26.932x255125x151x1/233.7x21.332x1851

32x251.1/4x142.4x33.738x325132x201.1/4x3/442.4x26.938x255132x151.1/4x1/242.4x21.338x185140x321.1/2x1.1/448.3x42.445x386440x251.1/2x148.3x33.745x326440x201.1/2x3/448.3x26.945x256440x151.1/2x1/248.3x21.345x186450x402x1.1/260.3x48.357x457650x322x1.1/460.3x42.457x387650x252x160.3x33.757x327650x202x3/460.3x26.957x257665x502.1/2x273.0x60.376x578965x402.1/2x1.1/273.0x48.376x458965x322.1/2x1.1/473.0x42.476x388965x252.1/2x173.0x33.776x328980x653x2.1/288.9x73.089x768980x503x288.9x60.389x578980x403x1.1/288.9x48.389x458980x323x1.1/488.9x42.489x388990x803.1/2x3101.6x88.9—10290x653.1/2x2.1/2101.6x73.0—102

90x503.1/2x2101.6x60.3—10290x403.1/2x1.1/2101.6x48.3—10290x323.1/2x1.1/4101.6x42.4—102100x904x3.1/2114.3x101.6—102100x804x3114.3x88.9108x89102100x654x2.1/2114.3x73.0108x76102100x504x2114.3x60.3108x57102100x404x1.1/2114.3x48.3108x45102125x1005x4141.3x114.3133x108127125x905x3.1/2141.3x101.6—127125x805x3141.3x88.9133x89127125x655x2.1/2141.3x73.0133x76127125x505x2141.3x60.3133x57127150x1256x5168.3x141.3159x133140150x1006x5168.3x114.3159x108140150x906x3.1/2168.3x101.6—140150x806x3168.3x88.9159x89140150x656x2.1/2168.3x73.0159x76140200x1508x6219.1x168.3219x159152200x1258x5219.1x141.3219x133152200x1008x4219.1x114.3219x108152

200x908x3.1/2219.1x101.6—152250x20010x8273.0x219.1273x219178250x15010x6273.0x168.3273x159178250x12510x5273.0x141.3273x133178250x10010x4273.0x114.3273x108178300x25012x10323.9x273.1325x273203300x20012x8323.9x219.1325x219203300x15012x6323.9x168.3325x159203300x12512x5323.9x141.3325x133203350x30014x12355.6x323.9377x325330350x25014x10355.6x273.0377x273330350x20014x8355.6x219.1377x219330350x15014x6355.6x168.3377x159330400x35016x14406.4x355.6426x377356400x30016x12406.4x323.9426x325356400x25016x10406.4x273.0426x273356400x20016x8406.4x219.1426x219356450x40018x16457x406.4478x426381450x35018x14457x355.6478x377381450x30018x12457x323.9478x325381450x25018x10457x273.0478x273381

500x45020x18508x457529x478508500x40020x16508x406.4529x426508500x35020x14508x355.6529x377508500x30020x12508x323.9529x325508550x50022x20559x508—508550x45022x18559x457—508550x40022x16559x406.4—508550x35022x14559x355.6—508600x55024x22610x559—508600x50024x20610x508630x529508600x45024x18610x457630x478508600x40024x22610x406.4630x426508650x60026x24660x610—610650x55026x22660x559—610650x50026x20660x508—610650x45026x18660x457—610700x65028x26711x660—610700x60028x24711x610720x630610700x55028x22711x559—610700x50028x20711x508720x530610750x70030x28762x711—610

750x65030x26762x660—610750x60030x24762x610—610750x55030x22762x559—610800x75032x30813x762—610800x70032x28813x711820x720610800x65032x26813x660—610800x60032x24813x610820x630610850x80034x32864x813—610850x75034x30864x762—610850x70034x28864x711—610850x65034x26864x660—610900x85036x34914x864—610900x80036x32914x813920x820610900x75036x30914x762—610900x70036x28914x711920x720610950x90038x36965x914—610950x85038x34965x864—610950x80038x32965x813—610950x75038x30965x762—6101000x95040x381016x965—6101000x90040x361016x9141020x920610

1000x85040x341016x864—6101000x80040x321016x8131020x8206101050x100042x401067x1016—6101050x95042x381067x965—6101050x90042x361067x914—6101050x85042x341067x864—6101100x105044x421118x1067—6101100x100044x401118x10161120x10206101100x95044x381118x965—6101100x90044x361118x9141220x9206101150x110046x441168x1118—7111150x105046x421168x1067—7111150x100046x401168x1016—7111150x95046x381168x965—7111200x115048x461220x1168—7111200x110048x441220x11181220x11207111200x105048x421220x1067—7111200x100048x401220x10161220x1020711推薦：河圣天管件集團有限公司生產制造各種材質的彎頭，彎管，法蘭，盲板法蘭，平焊法蘭，對焊法蘭，三通，四通，異徑管，大小頭，封頭，管帽，鋼板小法蘭，承插管件，鍛制管件，保溫管件等產品，常規(guī)型號產品備有大現(xiàn)貨，同時加工定做設計各種非型號管件產品。 聯(lián)系人：劉春曉QQ:16109759手機箱：16109759@網址： www.sheng-tI地址：中國河滄州孟村回族自治縣東河工業(yè)區(qū)江：河圣天管件集團有限公司是國家電公司、中國石油天然氣集團公司、中國石化集團公司的配件入網企業(yè)。推薦：河圣天管件集團有限公司生產制造各種材質的彎頭，彎管，法蘭，盲板法蘭，平焊法蘭，對焊法蘭，三通，四通，異徑管，大小頭，封頭，管帽，鋼板小法蘭，承插管件