Proces v\u00fdroby p\u0159\u00edrub
\nP\u0159\u00edruby jako spojovac\u00ed a t\u011bsnic\u00ed sou\u010d\u00e1sti budou p\u0159i probl\u00e9mech s kvalitou b\u011bhem v\u00fdrobn\u00edho procesu net\u011bsn\u00e9, co\u017e zp\u016fsob\u00ed ekonomick\u00e9 ztr\u00e1ty, \u0161kody na \u017eivotn\u00edm prost\u0159ed\u00ed a dokonce i bezpe\u010dnostn\u00ed nehody, tak\u017ee sva\u0159ov\u00e1n\u00ed a v\u00fdroba p\u0159\u00edrub jsou velmi d\u016fle\u017eit\u00e9.
\nV sou\u010dasn\u00e9 dob\u011b existuj\u00ed dva hlavn\u00ed v\u00fdrobn\u00ed postupy pro p\u0159\u00edruby: kov\u00e1n\u00ed a lit\u00ed. Pod\u00edvejme se na tyto dva hlavn\u00ed v\u00fdrobn\u00ed postupy a zjist\u011bme, jak\u00e9 jsou mezi nimi rozd\u00edly.
\nKovan\u00e1 p\u0159\u00edruba
\nKovan\u00e9 p\u0159\u00edruby se vyr\u00e1b\u011bj\u00ed nes\u010detn\u00fdmi \u00fadery kladivem na kov\u00e1\u0159sk\u00e9m stroji, aby se vnit\u0159n\u00ed struktura oceli stala t\u011bsnou, tak\u017ee mechanick\u00e9 vlastnosti budou lep\u0161\u00ed a pevnost bude vysok\u00e1. Kovan\u00e9 p\u0159\u00edruby jsou vhodn\u00e9 p\u0159edev\u0161\u00edm pro potrub\u00ed s vysok\u00fdm tlakem.
\nNejprve se v\u00e1lcov\u00fd ocelov\u00fd polotovar na\u0159e\u017ee na ur\u010ditou velikost, zah\u0159eje se na ur\u010ditou teplotu, aby se stal termoplastick\u00fdm, a um\u00edst\u00ed se na kov\u00e1n\u00ed za studena, aby kovac\u00ed stroj mohl ocelov\u00fd polotovar pr\u016fb\u011b\u017en\u011b zatloukat, tak\u017ee vnit\u0159ek ocelov\u00e9ho polotovaru je t\u011bsn\u011bj\u0161\u00ed a mechanick\u00e9 vlastnosti jsou lep\u0161\u00ed ne\u017e u p\u016fvodn\u00edho ocelov\u00e9ho polotovaru.
\nKulat\u00fd otvor na p\u0159\u00edrub\u011b je rovn\u011b\u017e vyra\u017een na ocelov\u00e9m polotovaru pomoc\u00ed lisovac\u00edho stroje. Vytvo\u0159en\u00fd polotovar p\u0159\u00edruby se vlo\u017e\u00ed do elektrick\u00e9 pece k tepeln\u00e9mu zpracov\u00e1n\u00ed, aby se zv\u00fd\u0161ila pevnost p\u0159\u00edruby. Nakonec se polotovar p\u0159\u00edruby roz\u0159e\u017ee a vyle\u0161t\u00ed, aby se z n\u011bj stala pou\u017eiteln\u00e1 p\u0159\u00edruba.
\nOdl\u00e9vac\u00ed p\u0159\u00edruba
\nOdl\u00e9van\u00e1 p\u0159\u00edruba se vyzna\u010duje n\u00edzk\u00fdmi v\u00fdrobn\u00edmi n\u00e1klady a vysokou \u00fa\u010dinnost\u00ed. Lze z n\u011bj vyr\u00e1b\u011bt p\u0159\u00edruby slo\u017eit\u00fdch tvar\u016f. Odl\u00e9van\u00e9 p\u0159\u00edruby jsou vhodn\u00e9 p\u0159edev\u0161\u00edm pro potrub\u00ed s n\u00edzk\u00fdm tlakem.
\nB\u011b\u017en\u011b pou\u017e\u00edvan\u00fdm v\u00fdrobn\u00edm procesem je tak\u00e9 odl\u00e9v\u00e1n\u00ed p\u0159\u00edrub. P\u0159i n\u011bm se kov roztav\u00ed na tekutou ocel a ta se nalije do p\u0159edeh\u0159\u00e1t\u00e9 kovov\u00e9 formy o konstantn\u00ed teplot\u011b, aby se vytvo\u0159il tvar p\u0159\u00edruby. Pot\u00e9, co je odlitek b\u011bhem ur\u010dit\u00e9 doby p\u0159irozen\u011b ochlazen a vytvarov\u00e1n, je rychle ochlazen a odlitek odformov\u00e1n vodou, co\u017e m\u016f\u017ee rovn\u011b\u017e zv\u00fd\u0161it pevnost p\u0159\u00edruby. Nakonec ji lze pou\u017e\u00edt po vyle\u0161t\u011bn\u00ed a prevenci proti korozi.<\/p>\n
Hlavn\u00ed p\u0159\u00ed\u010diny net\u011bsnosti p\u0159\u00edruby
\nExistuje mnoho p\u0159\u00ed\u010din net\u011bsnosti p\u0159\u00edruby a hlavn\u00ed p\u0159\u00ed\u010diny net\u011bsnosti p\u0159\u00edruby ve f\u00e1zi v\u00fdstavby jsou n\u00e1sleduj\u00edc\u00ed:
\n1) Po\u0161kozen\u00ed t\u011bsnic\u00edch ploch, jako jsou p\u0159\u00edruby a t\u011bsn\u011bn\u00ed;
\n2) jsou pou\u017eity nespr\u00e1vn\u00e9 materi\u00e1ly, jako jsou t\u011bsn\u011bn\u00ed nebo \u0161rouby, kter\u00e9 nemohou vyhovovat provozn\u00edm podm\u00ednk\u00e1m provozu potrub\u00ed;
\n3) Prohnut\u00ed p\u0159\u00edruby zp\u016fsobuje net\u011bsnost;
\n4) Nespr\u00e1vn\u00e9 uta\u017een\u00ed zp\u016fsobuje po\u0161kozen\u00ed t\u011bsn\u011bn\u00ed;
\n5) Z d\u016fvodu nedostate\u010dn\u00e9ho utahovac\u00edho zat\u00ed\u017een\u00ed nem\u016f\u017ee t\u011bsn\u011bn\u00ed dos\u00e1hnout t\u011bsnic\u00edho v\u00fdkonu;
\n6) V d\u016fsledku nadm\u011brn\u00e9ho utahovac\u00edho zat\u00ed\u017een\u00ed doch\u00e1z\u00ed k hnilob\u011b t\u011bsn\u011bn\u00ed.
\nKlasifikace p\u0159\u00edrub?<\/p>\n
1. Podle normy chemick\u00e9ho pr\u016fmyslu (HG):
\nIntegr\u00e1ln\u00ed p\u0159\u00edruba (IF), z\u00e1vitov\u00e1 p\u0159\u00edruba (Th), deskov\u00e1 ploch\u00e1 sva\u0159ovac\u00ed p\u0159\u00edruba (PL), p\u0159\u00edruba s hrdlem pro sva\u0159ov\u00e1n\u00ed na tupo (WN), ploch\u00e1 sva\u0159ovac\u00ed p\u0159\u00edruba s hrdlem (SO), n\u00e1str\u010dn\u00e1 sva\u0159ovac\u00ed p\u0159\u00edruba (SW), voln\u00e1 p\u0159\u00edruba s krou\u017ekem pro sva\u0159ov\u00e1n\u00ed na tupo (PJ\/SE), voln\u00e1 p\u0159\u00edruba s ploch\u00fdm sva\u0159ovac\u00edm krou\u017ekem (PJ\/RJ), kryt oblo\u017een\u00ed p\u0159\u00edruby (BL(S)), kryt p\u0159\u00edruby (BL).
\n2. Podle norem petrochemick\u00e9ho pr\u016fmyslu (SH): P\u0159\u00edruba se z\u00e1vitem (PT), p\u0159\u00edruba na tupo (WN), ploch\u00e1 p\u0159\u00edruba (SO), n\u00e1str\u010dn\u00e1 p\u0159\u00edruba (SW), voln\u00e1 p\u0159\u00edruba (LJ), kryt p\u0159\u00edruby (nen\u00ed uvedeno). 3. V souladu s pr\u016fmyslov\u00fdmi normami pro stroj\u00edrenstv\u00ed (JB): P\u0159\u00edruba pro integr\u00e1ln\u00ed sva\u0159ov\u00e1n\u00ed, p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, ploch\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, voln\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, voln\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, voln\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, voln\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, voln\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, kryt p\u0159\u00edruby. 4. Podle n\u00e1rodn\u00edch norem (GB): P\u0159\u00edruby: Integr\u00e1ln\u00ed p\u0159\u00edruba, z\u00e1vitov\u00e1 p\u0159\u00edruba, p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo, ploch\u00e1 sva\u0159ovac\u00ed p\u0159\u00edruba s hrdlem, p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed s n\u00e1str\u010dn\u00fdm hrdlem, krou\u017ekov\u00e1 p\u0159\u00edruba pro sva\u0159ov\u00e1n\u00ed na tupo s hrdlem voln\u011b, ploch\u00e1 sva\u0159ovac\u00ed p\u0159\u00edruba s hrdlem, krou\u017ekov\u00e1 deska pro sva\u0159ov\u00e1n\u00ed na tupo s hrdlem voln\u011b, ploch\u00e1 sva\u0159ovac\u00ed deska s hrdlem voln\u011b, krou\u017ekov\u00e1 deska pro sva\u0159ov\u00e1n\u00ed na tupo s hrdlem voln\u011b, kryt p\u0159\u00edruby. Normy p\u0159\u00edrub P\u0159\u00edruby jsou \u0161iroce pou\u017e\u00edv\u00e1ny jako spojovac\u00ed prvek v mezin\u00e1rodn\u00edm m\u011b\u0159\u00edtku, co\u017e vy\u017eaduje jednotnou normu. Existuj\u00ed nap\u0159\u00edklad dva hlavn\u00ed syst\u00e9my norem pro trubkov\u00e9 p\u0159\u00edruby, a to evropsk\u00fd syst\u00e9m trubkov\u00fdch p\u0159\u00edrub reprezentovan\u00fd n\u011bmeckou normou DIN (v\u010detn\u011b b\u00fdval\u00e9ho Sov\u011btsk\u00e9ho svazu) (DIN, GB, JB, HG20592) a americk\u00fd syst\u00e9m trubkov\u00fdch p\u0159\u00edrub reprezentovan\u00fd americkou trubkovou p\u0159\u00edrubou ANSI (v\u010detn\u011b ANSI, GB, HG20615). Krom\u011b toho existuj\u00ed japonsk\u00e9 trubkov\u00e9 p\u0159\u00edruby JIS, kter\u00e9 se v\u0161ak obecn\u011b pou\u017e\u00edvaj\u00ed pouze pro ve\u0159ejn\u00e9 pr\u00e1ce v petrochemick\u00fdch z\u00e1vodech a maj\u00ed mal\u00fd mezin\u00e1rodn\u00ed vliv. Zde je stru\u010dn\u00e9 p\u0159edstaven\u00ed trubkov\u00fdch p\u0159\u00edrub z r\u016fzn\u00fdch zem\u00ed:
\n1. Evropsk\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m
\nEvropsk\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m: N\u011bmeck\u00e1 DIN (v\u010detn\u011b Sov\u011btsk\u00e9ho svazu)
\n- Jmenovit\u00fd tlak: 0,1, 0,25, 0,6, 1,0, 1,6, 2,5, 4,0, 6,4, 10,0, 16,0, 25,0, 32,0, 40,0, Mpa;
\n- V\u00fdpo\u010dtov\u00fd pr\u016fm\u011br: 15 ~ 600 mm;
\n- Typ konstrukce p\u0159\u00edruby: typ ploch\u00e9 sva\u0159ovac\u00ed desky, typ ploch\u00e9ho sva\u0159ovac\u00edho krou\u017eku s volnou obj\u00edmkou, typ voln\u00e9 obj\u00edmky s v\u00e1lcovan\u00fdm okrajem, typ voln\u00e9 obj\u00edmky s v\u00e1lcovan\u00fdm okrajem pro sva\u0159ov\u00e1n\u00ed na tupo, typ voln\u00e9 obj\u00edmky pro sva\u0159ov\u00e1n\u00ed na tupo, typ sva\u0159ov\u00e1n\u00ed na tupo, typ z\u00e1vitov\u00e9ho spojen\u00ed, integr\u00e1ln\u00ed typ a kryt p\u0159\u00edruby;
\n- Mezi t\u011bsnic\u00ed plochy p\u0159\u00edruby pat\u0159\u00ed: rovn\u00fd povrch, konk\u00e1vn\u00ed povrch, konk\u00e1vn\u00ed a konvexn\u00ed povrch, povrch s perem a dr\u00e1\u017ekou, povrch pry\u017eov\u00e9ho krou\u017eku, povrch \u010do\u010dky a povrch svaru membr\u00e1ny;
\n- Norma pro registraci p\u0159\u00edrub potrub\u00ed OCT vydan\u00e1 Sov\u011btsk\u00fdm svazem v roce 1980 je podobn\u00e1 n\u011bmeck\u00e9 norm\u011b DIN.
\n2. Americk\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m
\nAmerick\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m: P\u0159\u00edruby a p\u0159\u00edrubov\u00e9 tvarovky: americk\u00fd syst\u00e9m ANSI B16.5 \"Ocelov\u00e9 p\u0159\u00edruby a p\u0159\u00edrubov\u00e9 tvarovky\".
\n- Jmenovit\u00fd tlak: 150psi (2,0Mpa), 300psi (5,0Mpa), 400psi (6,8Mpa), 600psi (10,0Mpa), 900psi (15,0Mpa), 1500psi (25,0Mpa), 2500psi (42,0Mpa);
\n- V\u00fdpo\u010dtov\u00fd pr\u016fm\u011br: 6 ~ 4000 mm;
\n- Typ konstrukce p\u0159\u00edruby: sva\u0159ov\u00e1n\u00ed p\u00e1sk\u016f, sva\u0159ov\u00e1n\u00ed z\u00e1suvek, z\u00e1vitov\u00e9 spojen\u00ed, voln\u00e9 pouzdro, sva\u0159ov\u00e1n\u00ed na tupo a kryt p\u0159\u00edruby;
\n- T\u011bsnic\u00ed povrch p\u0159\u00edruby: konk\u00e1vn\u00ed povrch, konk\u00e1vn\u00ed a konvexn\u00ed povrch, povrch s perem a dr\u00e1\u017ekou, povrch kovov\u00e9ho krou\u017eku.
\n3. JIS (japonsk\u00e1 norma) p\u0159\u00edruba potrub\u00ed
\nP\u0159\u00edruba potrub\u00ed JIS: JIS je obecn\u011b pou\u017e\u00edv\u00e1na pouze pro ve\u0159ejn\u00e9 stroj\u00edrenstv\u00ed v petrochemick\u00fdch z\u00e1vodech, m\u00e1 mal\u00fd mezin\u00e1rodn\u00ed vliv a nevytvo\u0159ila nez\u00e1visl\u00fd mezin\u00e1rodn\u00ed syst\u00e9m.
\nP\u0159ipojen\u00fd syst\u00e9m GB (n\u00e1rodn\u00ed norma)
\nn\u00e1rodn\u00ed standardn\u00ed syst\u00e9m m\u00e9 zem\u011b pro p\u0159\u00edruby ocelov\u00fdch trubek je GB.
\n1. Jmenovit\u00fd tlak: 0,25 MPa ~ 42,0 MPa
\n- \u0158ada 1: PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42 (hlavn\u00ed \u0159ada)
\n- \u0158ada 2: PN0,25, PN0,6, PN2,5, PN4,0
\nZ nich PN0,25, PN0,6, PN1,0, PN1,6, PN2,5, PN4,0, celkem 6 \u00farovn\u00ed velikost\u00ed p\u0159\u00edrub pat\u0159\u00ed do evropsk\u00e9ho syst\u00e9mu p\u0159\u00edrub reprezentovan\u00e9ho n\u011bmeckou p\u0159\u00edrubou a zbytek je americk\u00fd syst\u00e9m p\u0159\u00edrub reprezentovan\u00fd americkou p\u0159\u00edrubou.
\nV norm\u011b GB je maxim\u00e1ln\u00ed jmenovit\u00e1 \u00farove\u0148 tlaku pro evropsk\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m 4 MPa a maxim\u00e1ln\u00ed jmenovit\u00e1 \u00farove\u0148 tlaku pro americk\u00fd p\u0159\u00edrubov\u00fd syst\u00e9m 42 MPa.
\n2. Jmenovit\u00fd pr\u016fm\u011br: 10 mm ~ 4000 mm
\n3. Konstrukce p\u0159\u00edruby:
\n\u2460 Integr\u00e1ln\u00ed p\u0159\u00edruba \u2461 P\u0159\u00edruba jednotky
\n- Z\u00e1vitov\u00e1 p\u0159\u00edruba;
\n- Sva\u0159ovan\u00e1 p\u0159\u00edruba, p\u0159\u00edruba sva\u0159ovan\u00e1 na tupo;
\n- P\u0159\u00edruba s ploch\u00fdm hrdlem, p\u0159\u00edruba s hrdlem, p\u0159\u00edruba s ploch\u00fdm hrdlem, p\u0159\u00edruba s ploch\u00fdm hrdlem: voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba, krou\u017eek p\u0159iva\u0159en\u00fd na tupo voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba s hrdlem, krou\u017eek p\u0159iva\u0159en\u00fd na tupo voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba s ploch\u00fdm hrdlem, krou\u017eek p\u0159iva\u0159en\u00fd na tupo voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba s ploch\u00fdm hrdlem, voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba s ploch\u00fdm hrdlem, voln\u011b p\u0159il\u00e9haj\u00edc\u00ed p\u0159\u00edruba s p\u0159ekl\u00e1p\u011bc\u00edm hrdlem.
\n- Kryt p\u0159\u00edruby (p\u0159\u00edruba se slep\u00fdm otvorem).
\n4. T\u011bsnic\u00ed plocha p\u0159\u00edruby: rovn\u00e1 plocha, konk\u00e1vn\u00ed plocha, konk\u00e1vn\u011b-konvexn\u00ed plocha, plocha s perem a dr\u00e1\u017ekou, plocha krou\u017ekov\u00e9ho spoje.<\/p>\n
Mont\u00e1\u017e p\u0159\u00edruby<\/p>\n
1. P\u0159ed mont\u00e1\u017e\u00ed p\u0159\u00edruby je t\u0159eba o\u010distit povrch p\u0159\u00edruby, zejm\u00e9na t\u011bsnic\u00ed plochu.
\n2. P\u0159i mont\u00e1\u017ei ploch\u00e9 sva\u0159ovan\u00e9 p\u0159\u00edruby by m\u011bl b\u00fdt konec trubky vlo\u017een do p\u0159\u00edruby o vnit\u0159n\u00edm pr\u016fm\u011bru 2\u22643 a pot\u00e9 by m\u011bla b\u00fdt p\u0159\u00edruba a trubka bodov\u011b sva\u0159eny. Pokud se jedn\u00e1 o vodorovn\u00e9 potrub\u00ed, m\u011bla by b\u00fdt p\u0159\u00edruba bodov\u011b sva\u0159ena shora a pot\u00e9 by m\u011bla b\u00fdt poloha p\u0159\u00edruby zkontrolov\u00e1na a korigov\u00e1na z r\u016fzn\u00fdch sm\u011br\u016f pomoc\u00ed \u00fahlov\u00e9ho prav\u00edtka 90\u00b0 tak, aby jej\u00ed t\u011bsnic\u00ed plocha byla kolm\u00e1 na osu potrub\u00ed, a pot\u00e9 je druh\u00fd bod pod bodov\u00fdm sva\u0159ov\u00e1n\u00edm spr\u00e1vn\u00fd.
\n3. Zkontrolujte a opravte polohu p\u0159\u00edruby z lev\u00e9ho a prav\u00e9ho sm\u011bru pomoc\u00ed \u00fahlov\u00e9ho prav\u00edtka 90\u00b0, po pr\u016fchodu p\u0159iva\u0159te bodov\u011b t\u0159et\u00ed a \u010dtvrt\u00fd bod a dokon\u010dete bodov\u00e9 sva\u0159ov\u00e1n\u00ed a upevn\u011bn\u00ed p\u0159\u00edruby.
\n4. Pokud jde o mont\u00e1\u017e dvojice p\u0159\u00edrub, otvory pro \u0161rouby mont\u00e1\u017en\u00ed p\u0159\u00edruby by m\u011bly b\u00fdt zarovn\u00e1ny s odpov\u00eddaj\u00edc\u00edmi otvory pro \u0161rouby pevn\u00e9 p\u0159\u00edruby a rovnob\u011b\u017en\u00e9 s pevnou p\u0159\u00edrubou a odchylka by nem\u011bla b\u00fdt men\u0161\u00ed ne\u017e 1,5% vn\u011bj\u0161\u00edho pr\u016fm\u011bru p\u0159\u00edruby na tis\u00edc a ne v\u011bt\u0161\u00ed ne\u017e 2 mm.
\n5. P\u0159i v\u00fdb\u011bru odpov\u00eddaj\u00edc\u00ed p\u0159\u00edruby za\u0159\u00edzen\u00ed nebo sou\u010d\u00e1sti ventilu je t\u0159eba v\u011bnovat pozornost tomu, zda p\u0159\u00edruba p\u016fvodn\u00edho za\u0159\u00edzen\u00ed nebo sou\u010d\u00e1sti ventilu odpov\u00edd\u00e1 velikosti p\u0159\u00edrubov\u00e9ho spoje pou\u017eit\u00e9ho v potrub\u00ed.
\nP\u0159\u00edrubov\u00e9 p\u0159ipojen\u00ed<\/p>\n
1. P\u0159\u00edrubov\u00fd spoj by m\u011bl b\u00fdt udr\u017eov\u00e1n ve stejn\u00e9 ose, st\u0159edov\u00e1 odchylka otvoru pro \u0161roub by nem\u011bla p\u0159ekro\u010dit 5% otvoru a \u0161roub by m\u011bl b\u00fdt voln\u011b perforovan\u00fd. Spojovac\u00ed \u0161rouby p\u0159\u00edruby by m\u011bly m\u00edt stejn\u00e9 specifikace, sm\u011br mont\u00e1\u017ee by m\u011bl b\u00fdt stejn\u00fd a \u0161rouby by m\u011bly b\u00fdt uta\u017eeny symetricky a rovnom\u011brn\u011b.
\n2. Ke kompenzaci nerovnom\u011brnosti p\u0159\u00edruby by se nem\u011bly pou\u017e\u00edvat ku\u017eelov\u00e9 podlo\u017eky r\u016fzn\u00fdch tlou\u0161t\u011bk. Nepou\u017e\u00edvejte dvojit\u00e9 podlo\u017eky. Pokud je t\u0159eba spojit podlo\u017eky velk\u00e9ho pr\u016fm\u011bru, nem\u011bly by b\u00fdt spojeny na tupo s ploch\u00fdmi porty, ale m\u011bly by m\u00edt podobu \u0161ikm\u00fdch kl\u00edn\u016f nebo labyrint\u016f.
\n3. Pro usnadn\u011bn\u00ed mont\u00e1\u017ee a demont\u00e1\u017ee p\u0159\u00edrub nesm\u00ed b\u00fdt vzd\u00e1lenost mezi upev\u0148ovac\u00edmi \u0161rouby a povrchem p\u0159\u00edruby men\u0161\u00ed ne\u017e 200 mm.
\n4. P\u0159i utahov\u00e1n\u00ed \u0161roub\u016f by m\u011bly b\u00fdt \u0161rouby symetrick\u00e9 a k\u0159\u00ed\u017e\u00edc\u00ed se, aby byla zaji\u0161t\u011bna rovnom\u011brn\u00e1 s\u00edla na podlo\u017eky.
\n5. \u0160rouby a matice by m\u011bly b\u00fdt pota\u017eeny disulfidem molybdenu, grafitov\u00fdm olejem nebo grafitov\u00fdm pr\u00e1\u0161kem pro n\u00e1sledn\u00e9 odstran\u011bn\u00ed: nerezov\u00e1 ocel, \u0161rouby a matice z legovan\u00e9 oceli; konstruk\u010dn\u00ed teplota potrub\u00ed je 100 \u2103 nebo ni\u017e\u0161\u00ed ne\u017e 0 \u2103; za\u0159\u00edzen\u00ed pod \u0161ir\u00fdm nebem; atmosf\u00e9rick\u00e1 koroze nebo korozivn\u00ed m\u00e9dia.<\/p>\n
Kontaktn\u00ed informace pro dotazy k pr\u016fmyslov\u00fdm p\u0159\u00edrub\u00e1m<\/span><\/p>\n Pro v\u00edce informac\u00ed o pr\u016fmyslov\u00fdch p\u0159\u00edrub\u00e1ch nebo pro z\u00edsk\u00e1n\u00ed \u0159e\u0161en\u00ed na m\u00edru n\u00e1s pros\u00edm kontaktujte:<\/span><\/p>\n T\u011b\u0161\u00edme se na spolupr\u00e1ci s v\u00e1mi a na poskytov\u00e1n\u00ed spolehliv\u00e9 podpory a slu\u017eeb pro va\u0161e podnik\u00e1n\u00ed.<\/span><\/p>","protected":false},"excerpt":{"rendered":" Pr\u016fmyslov\u00e1 p\u0159\u00edruba je hlavn\u00edm produktem spole\u010dnosti CHINA MACHINERY ENGINEERING WUXI CO., LTD. Jedn\u00e1 se o kl\u00ed\u010dov\u00fd v\u00fdrobek \u0161iroce pou\u017e\u00edvan\u00fd v mnoha pr\u016fmyslov\u00fdch odv\u011btv\u00edch a aplika\u010dn\u00edch sc\u00e9n\u00e1\u0159\u00edch, jako je petrochemie, p\u0159eprava zemn\u00edho plynu, energetick\u00e1 za\u0159\u00edzen\u00ed a stavba lod\u00ed.<\/p>","protected":false},"featured_media":831,"template":"","adweb_product_categories":[61],"adweb_product_tags":[124,112,127,126,125,123,122],"gallery":[832,833,834],"order":"0","acf":[],"_links":{"self":[{"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/adweb_products\/830"}],"collection":[{"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/adweb_products"}],"about":[{"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/types\/products"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/media\/831"}],"wp:attachment":[{"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/media?parent=830"}],"wp:term":[{"taxonomy":"adweb_product_cat","embeddable":true,"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/adweb_product_categories?post=830"},{"taxonomy":"adweb_product_tag","embeddable":true,"href":"https:\/\/www.cmecsteel.com\/cs\/wp-json\/wp\/v2\/adweb_product_tags?post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n