Payipu y’okuziika obutereevu egabanyizibwamu layeri ssatu okuva munda okutuuka ebweru .

Layer esooka: payipu etaliimu buzibu (GB8163-87) spiral welded payipu (GB9711-88; SY / T5038-92) ne straight seam welded payipu okutwalira awamu zirondebwa okusinziira ku dizayini n’ebyetaago bya bakasitoma (GB3092-93). Oluvannyuma lw’okungulu kwa payipu y’ekyuma okulongoosebwa n’enkola y’okukuba amasasi ey’omulembe, payipu y’ekyuma esobola okutuuka ku SA 2 mu mutindo gwa GB8923-1988, era obukaluba ku ngulu busobola okutuuka ku r=12.5 microns mu mutindo gwa GB6060.5-88.
Layer eyokubiri: Polyurethane insulation layer n’ekyuma kya high pressure foam mu kisenge ekikolebwa wakati wa steel tube ne outer protective layer olumala okufuyira mu rigid polyurethane foam plastic stock solution. Kwe kugamba ekimanyiddwa ennyo nga "tube mu nkola ya tube foaming". Omulimu gwayo teguyingiramu mazzi, bbiri kwe kukuuma ebbugumu, ssatu kwe kuwagira obuzito bw’akatimba k’ebbugumu. Ebbugumu ly’ekintu ekitambuza bwe liba-50℃- -120℃, akaveera aka rigid polyureate foam kakozesebwa nga layeri y’okuziyiza.
Layer eyokusatu: High density polyethylene protective layer prefabricated into a certain black (ekyewaze) pulasitiika payipu wall obuwanvu, omulimu gwayo kwe kukuuma polyurethane insulation layer okuva mu mechanical hard damage, second ye anti-okukulukuta n'amazzi okuziyiza.
Payipu ya jaketi ya polyethylene ekoleddwa mu kintu kya polyethylene eky’ekika ekya waggulu-Density, nga erina amaanyi mangi nnyo mu byuma n’okuziyiza okukulukuta okulungi ennyo, ekiyinza okukuuma payipu mu nkola y’okutambuza, okugiteeka n’okukozesa okwewala okwonooneka okuva ku bintu eby’ebweru. Tubu eno ey’ebweru erina okugattibwamu eddagala eriziyiza obuwuka obuleeta obulwadde bwa ‘antioxidant’, ‘ultraviolet stabilizer’ ne ‘carbon black’.