I. Metal dan mu nneɛma su .
1. galvanized steel: Steel a wɔde electrogalvanizing kwan so ayɛ no ma rust resistance a ɛkyɛn so ne structure ahoɔden, nanso ebetumi ahu amane wɔ soro oxidation bere a wɔde wɔn ho ahyɛ mmeae a ɛhɔ yɛ nwini bere tenten akyi.
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ii. Mfaso ne nneɛma a wɔde yɛ dade a ɛnyɛ den .
1. 304 Stainless steel: Standard austenitic stainless steel a ɛwɔ 18% chromium ne 8% nickel, a ɛfata ma dan mu mmeae dodow no ara, a ɛma afɛfɛde ne nea ɛtra hɔ kyɛ nyinaa.
2. 316 Stainless steel: Wɔde molybdenum ka ho na ama corrosion resistance ayɛ kɛse, na ɛma ɛfata titiriw ma mmeae a nkyene pii petepete te sɛ mpoano mmeae. Nanso, ɛka a wɔbɔ wɔ nneɛma a wɔbɛtɔ ho no yɛ kɛse.
iii. Ano aduru a emu yɛ hare a wɔde engineering plastic ayɛ .
1. ABS Resin: Ɛma ahoɔden a ɛkyɛn so ahoɔden ne formability, wobetumi de electroplated anaa paint ayɛ no ma ayɛ dade awie, na ɛfata ma nketewa ne mfinimfini-sized nnwinnade.
2. Polypropylene: Saa adeɛ yi ma nnuru no gyina, ɛba fam-ɔhyew mu nsunsuansoɔ a ɛko tia, na ɛdu aduane a ɛka ho ahobanbɔ gyinapɛn ho. Wɔtaa de di dwuma wɔ mfiri a wɔde tɔn anonne mu.
iv. Nneɛma atitiriw a ɛwɔ gyinaesi a ɛfa paw ho no mu .
1. corrosion protection requirements: Wɔkamfo dadeɛ a ɛnyɛ den 316 kyerɛ wɔ mpoano mmeaeɛ, berɛ a kɔla-dadeɛ a wɔakata so no bɛtumi asusu ho ama mmeaeɛ a wɔyɛ mfiridwuma.
2. Structural Strength Requirements: Wɔpɛ dadeɛ nneɛma a ne kɛseɛ yɛ 1.2mm anaa nea ɛboro saa ma nnwinnadeɛ a emu yɛ duru.
3. Nsiesie a ɛyɛ mmerɛw: Ɛnyɛ den-To{2}}Wɔkamfo dade a ɛnyɛ den a ɛho tew kyerɛ mmeae te sɛ aguadi adan.
4. Ka a wɔbɔ ho nhyehyɛe: galvanized steel a wɔde ka ho a wɔde anti-corrosion maintenance plan ayɛ no daa no, wobetumi de adi dwuma bere a sikasɛm nhyehyɛe no sua no.