Steel Pipe yɛ nneɛma a wɔtaa yɛ wɔ adansi, mfiri a wɔyɛ, ne mfiridwuma mu no mu biako. Nanso, dade paipu atitiriw ahorow pii wɔ hɔ, a nsonsonoe kɛse wɔ nneɛma, adeyɛ, adwumayɛ, ne sɛnea wɔde di dwuma mu. Sɛ wote nsonsonoe ahorow yi ase a, ɛbɛboa wo ma woapaw dade paipu a ɛfata sen biara ama wo dwumadie no.
I. Nsonsonoeɛ a ɛnam honam fam nkyekyɛmu so .
1. Carbon dade paipu .
Carbon dade paipu ne dade paipu titiriw a wɔtaa de di dwuma. Ɛyɛ dadeɛ ne carbon titire, a carbon a ɛwɔ mu no taa firi 0.02% kɔsi 2.11%. Ɛgyina carbon a ɛwɔ mu no so no, wobetumi akyekyɛ mu ayɛ no low-carbon dadeɛ, medium-carbon dadeɛ, ne soro-carbon dadeɛ paipu.
Low-carbon dadeɛ paipu (te sɛ Q235): ɛma ahoɔden a ɛkɔ fam, ɛyɛ den yie, na ɛyɛ mmerɛw sɛ welding. Wɔde di dwuma kɛse wɔ adansi nhyehyɛe, nsu a wɔde fa nsu mu, ne nneɛma afoforo a wɔde di dwuma mu.
Medium-High Carbon Steel Pipe: Ɛma ahoɔden a ɛkorɔn nanso ɛtew toughness so. Ɛfata sɛ wɔde di dwuma a ɛhwehwɛ sɛ ɛyɛ den kɛse, te sɛ mfiri afã horow ne nsuten.
2. Alloy dade paipu .
Wɔde carbon steel a wɔde dadeɛ nneɛma foforɔ ka ho, te sɛ chromium, nickel, ne molybdenum na ɛyɛ alloy steel pipes a ɛbɛma corrosion resistance, strength, anaa high-temperature performance ayɛ kɛseɛ.
Dade a ɛnyɛ den (te sɛ 304 ne 316): Chromium ne nikel wɔ mu, na ɛma wotumi gyina nsɛe ano yiye. Wɔtaa de di dwuma wɔ nnuru, aduan a wɔyɛ, ne nnuruyɛ mu.
Low-Alloy high-ahoɔden dadeɛ nhama (te sɛ Q345): Ɛwɔ nneɛma te sɛ manganese ne silicon, a ɛde ahoɔden a ɛkorɔn sene carbon dadeɛ a ɛyɛ mmerɛw. Wɔfata ma adan te sɛ bridges ne soro-nhyɛso ntini.
3. dade nhama a ɛnyɛ den ne nea wɔde weld ayɛ .
Seamless steel pipes: Wɔnam perforation anaasɛ extrusion akwan so na ɛyɛ, wonni weld seams na ɛma nhyɛso no tumi gyina ano kɛse. Wɔfata ma kɔ soro-nhyɛso, ɛkorɔn-ɔhyew tebea horow, te sɛ nsu a wɔde yɛ nsu a ɛyɛ hyew ne ngo nhama.
Welded Steel Pipes (te sɛ ERW ne LSAW): Wɔde dade mprɛte a ɛyɛ coiling ne welding na ɛyɛ, na ɛyɛ nea ɛho ka yɛ kɛse-ɛnyɛ yiye na ɛfata ma nsu a ɛba fam-nsu a wɔde fa nsu mu, te sɛ nsu ne gas nhyehyɛe.
ii. Nsonsonoe a ɛwɔ nneɛma a wɔyɛ mu .
1. Ɔhyew-dadeɛ a wɔabɔ no afiri mu .
Hot-Wɔabɔ dadeɛ paipu a wɔabɔ no akuturuku wɔ ɔhyew a ɛkorɔn mu. Ɛwɔ mu nhyehyɛe a ɛyɛ pɛ, nanso ebetumi ayɛ nea ɛyɛ mmerɛw. Wɔtaa de yɛ structure parts ne machining.
2. Awɔw-rolled/cold-Ade a wɔde dade ayɛ a wɔatwe .
Awɔw-rolled anaa cold-Drawn steel pipe no fa fam-temperature processing, a ɛde nsusuwii a ɛkorɔn pɛpɛɛpɛ ne ɔfasu a ɛyɛ mmerɛw ba. Ɛfata ma dwumadie a ɛwɔ dimensional ahwehwɛdeɛ a ɛyɛ den, te sɛ precision machinery ne automotive parts.
iii. Nsonsonoe a ɛwɔ mu denam akwammisa so .
1. Ɔdansi dade paipu .
Wɔde di dwuma titiriw wɔ adansi, abɔnten so, ne mfiri a wɔde gyina so, te sɛ q235b dade paipu, a esi ahoɔden ne weldability so dua.
2. Nsu a wɔde fa mu dade paipu .
Wɔde di dwuma de fa nsu, ngo, ne gas, te sɛ dade paipu a wɔde weld ayɛ (API 5L), a ɛhwehwɛ sɛ ɔfasu no mu yɛ torotoro na ɛko tia nsɛe.
3. Ɔsoro-nhyɛso/a ɛkorɔn-Ɔhyew a ɛyɛ dade paipu .
Sɛ wɔde di dwuma te sɛ boiler pipes ne oil casing a, seamless alloy steel pipe taa gyina nhyɛso ne ɔhyew a ɛyɛ hu ano.
iv. Ɔkwan bɛn so na wobɛpaw mfitiase dade paipu a ɛfata? Ɔdansi Nneɛma: Carbon Structure Steel (te sɛ Q235) na wɔpɛ.
Nnuru/Aduan Nnwuma: Stainless Steel Pipe (te sɛ 304, 316) na wɔpɛ.
High-Pressure fluid transportation: Wɔde dadeɛ paipu a ɛnyɛ den anaa alloy na ɛyɛ adwuma.
Mfiri a ɛyɛ pɛpɛɛpɛ: Awɔw-Wɔatwe anaasɛ awɔw-Wɔapaw dade paipu a wɔabɔ no sɛnea ɛbɛyɛ a ɛbɛhwɛ ma ne kɛse ayɛ pɛpɛɛpɛ.
Nsonsonoe a ɛda dade nsu afiri titiriw ntam no nyɛ nea ɛda adi wɔ nneɛma ne nsaanodwuma mu nko, na mmom ɛka wɔn dwumadie tebea nso tẽẽ. Ɛnyɛ sɛ dade paipu a ɛfata a wɔbɛpaw no ma adwuma no ahobammɔ tu mpɔn nko, na mmom ɛtew ɛka so nso na ɛma ɔsom adwuma no nkwa nna yɛ kɛse.
