JIS G 3454nyaéta standar industri Jepang pikeun pipa baja karbon pikeun sistem tekanan kalayan suhu operasi maksimum 350°C. Standar ieu ngawengku dua tingkatan:STPG 370jeungSTPG 410Ieu lumaku pikeun pipa anu dilas résistansi listrik (ERW) atanapi pipa anu teu aya sambunganna kalayan diaméter nominal 10,5 mm dugi ka 660,4 mm (nyaéta 6A dugi ka 650A, atanapi 1/8B dugi ka 26B).
JIS G 3454 Pipa baja kudu dijieun ngagunakeun kombinasi anu merenah antara métode manufaktur pipa baja jeung métode finishing dina tabél di handap ieu.
| Simbol kelas | Simbol prosés manufaktur | ||
| Prosés manufaktur pipa | Métode finishing | Klasifikasi palapis séng | |
| STPG370 STPG410 | Mulus: S Résistansi listrik dilas: E | Rengse panas: H Rengse tiis: C Salaku résistansi listrik dilas: G | Pipa hideung: pipa anu teu dilapis séng Pipa bodas: pipa anu dibéré lapisan séng |
Sacara khusus, aya lima metode manufaktur:
SHPipa baja seamless anu difinish panas;
SCPipa baja seamless anu difinishing tiis;
EHPipa baja las tahan listrik anu dilas panas;
ECPipa baja tahan listrik anu dilas tiis;
EGPipa baja dilas résistansi listrik lian ti anu difinishing panas sareng anu difinishing tiis.
Baja Botopnyaéta produsén sareng supplier pipa baja karbon las kualitas luhur ti Cina, ogé stockist pipa baja seamless. Upami anjeun gaduh kabutuhan, mangga ngahubungi kami sareng kami bakal nyayogikeun dukungan téknis profésional gratis.
| Simbol kelas | C | Si | Mn | P | S |
| maksimal | maksimal | — | maksimal | maksimal | |
| STPG 370 | 0,25% | 0,35% | 0,30-0,90% | 0,040% | 0,040% |
| STPG 410 | 0,30% | 0,35% | 0.30-1.00% | 0,040% | 0,040% |
Ngamungkinkeun panambahan unsur paduan anu sanés.
Kakuatan Tarik, Titik Luluh atanapi Tegangan Bukti, sareng Elongasi
| Simbol kelas | Kakuatan regangan | Titik hasil atanapi setrés bukti | Pemanjangan mnt, % | |||
| Benda uji tarik | ||||||
| No.11 atanapi No.12 | No.5 | No.4 | ||||
| N/mm² (MPA) | N/mm² (MPA) | Arah uji tarik | ||||
| menit | menit | Sajajar jeung sumbu pipa | Tegak lurus kana sumbu pipa | Sajajar jeung sumbu pipa | Tegak lurus kana sumbu pipa | |
| STPT370 | 370 | 215 | 30 | 25 | 28 | 23 |
| STPT410 | 410 | 245 | 25 | 20 | 24 | 19 |
Tes Perataan
Nalika jarak antara dua pelat ngahontal jarak anu ditangtukeun H, moal aya cacad atanapi retakan dina permukaan pipa baja.
Pikeun tabung baja anu teu aya sambunganna: H = (1+e)t/(e + t/D);
Pikeun pipa baja ERW: H = 1/3 D (pikeun las) atanapi H = 2/3 D (pikeun bagian anu teu aya las);
H: jarak antara pelat anu diratakeun (mm);
е: konstanta anu ditetepkeun sacara individual pikeun unggal tingkatan pipa, 0,08 pikeun STPG 370, 0,07 pikeun STPG 410;
t: ketebalan témbok pipa (mm);
D: diaméter luar pipa (mm);
Uji Perataan lumaku pikeun pipa baja kalayan diaméter nominal langkung ageung tibatan 40A (48,6mm).
Kamampuh Lentur
Kamampuh lentur lumaku pikeun pipa kalayan diaméter nominal 40 A (48.6) atanapi langkung alit.
Pipa éta kudu dibengkokkeun 90° dina radius 6 kali diaméter luarna. Témbok pipa kudu bébas tina cacad atawa retakan.
Unggal pipa baja kedah ngalaman uji tekanan hidrostatik atanapi uji non-destruktif.
Uji Hidrostatik
Pertahankeun tekanan anu tangtu sahenteuna 5 detik tanpa bocor.
Nilai tekanan aya patalina jeung jadwal No. pipa baja.
| Ketebalan témbok nominal | Nomer jadwal: Sch | |||||
| 10 | 20 | 30 | 40 | 60 | 80 | |
| Tekanan uji hidrolik minimum, Mpa | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 |
Uji Non-destruktif
Upami pamariksaan ultrasonik dianggo, éta kedah dumasar kana standar anu langkung ketat tibatan sinyal kelas UD dina JIS G 0582.
Upami uji arus eddy dianggo, éta kedah dumasar kana standar anu langkung ketat tibatan sinyal kelas EY dina JIS G 0583.
| Diaméter nominal | Diaméter luar | Kandel témbok | Massa unit | Nomer jadwal (No. Sakola) | |
| A | B | mm | mm | kg/m | |
| 6 | 1/8 | 10.5 | 1.7 | 0.369 | 40 |
| 6 | 1/8 | 10.5 | 2.2 | 0.450 | 60 |
| 6 | 1/8 | 10.5 | 2.4 | 0.479 | 80 |
| 8 | 1/4 | 13.8 | 2.2 | 0.629 | 40 |
| 8 | 1/4 | 13.8 | 2.4 | 0.675 | 60 |
| 8 | 1/4 | 13.8 | 3.0 | 0.799 | 80 |
| 10 | 3/8 | 17.3 | 2.3 | 0.851 | 40 |
| 10 | 3/8 | 17.3 | 2.8 | 1.00 | 60 |
| 10 | 3/8 | 17.3 | 3.2 | 1.11 | 80 |
| 15 | 1/2 | 21.7 | 2.8 | 1.31 | 40 |
| 15 | 1/2 | 21.7 | 3.2 | 1.46 | 60 |
| 15 | 1/2 | 21.7 | 3.7 | 1.64 | 80 |
| 20 | 3/4 | 27.2 | 2.9 | 1.74 | 40 |
| 20 | 3/4 | 27.2 | 3.4 | 2.00 | 60 |
| 20 | 3/4 | 27.2 | 3.9 | 2.24 | 80 |
| 25 | 1 | 34.0 | 3.4 | 2.57 | 40 |
| 25 | 1 | 34.0 | 3.9 | 2.89 | 60 |
| 25 | 1 | 34.0 | 4.5 | 3.27 | 80 |
| 32 | 1 1/4 | 42.7 | 3.6 | 3.47 | 40 |
| 32 | 1 1/4 | 42.7 | 4.5 | 4.24 | 60 |
| 32 | 1 1/4 | 42.7 | 4.9 | 4.57 | 80 |
| 40 | 1 1/2 | 48.6 | 3.7 | 4.10 | 40 |
| 40 | 1 1/2 | 48.6 | 4.5 | 4.89 | 60 |
| 40 | 1 1/2 | 48.6 | 5.1 | 5.47 | 80 |
| 50 | 2 | 60.5 | 3.2 | 4.52 | 20 |
| 50 | 2 | 60.5 | 3.9 | 5.44 | 40 |
| 50 | 2 | 60.5 | 4.9 | 6.72 | 60 |
| 50 | 2 | 60.5 | 5.5 | 7.46 | 80 |
| 65 | 2 1/2 | 76.3 | 4.5 | 7.97 | 20 |
| 65 | 2 1/2 | 76.3 | 5.2 | 9.12 | 40 |
| 65 | 2 1/2 | 76.3 | 6.0 | 10.4 | 60 |
| 65 | 2 1/2 | 76.3 | 7.0 | 12.0 | 80 |
| 80 | 3 | 89.1 | 4.5 | 9.39 | 20 |
| 80 | 3 | 89.1 | 5.5 | 11.3 | 40 |
| 80 | 3 | 89.1 | 6.6 | 13.4 | 60 |
| 80 | 3 | 89.1 | 7.6 | 15.3 | 80 |
| 90 | 3 1/2 | 101.6 | 4.5 | 10.8 | 20 |
| 90 | 3 1/2 | 101.6 | 5.7 | 13.5 | 40 |
| 90 | 3 1/2 | 101.6 | 7.0 | 16.3 | 60 |
| 90 | 3 1/2 | 101.6 | 8.1 | 18.7 | 80 |
| 100 | 4 | 114.3 | 4.9 | 13.2 | 20 |
| 100 | 4 | 114.3 | 6.0 | 16.0 | 40 |
| 100 | 4 | 114.3 | 7.1 | 18.8 | 60 |
| 100 | 4 | 114.3 | 8.6 | 22.4 | 80 |
| 125 | 5 | 139.8 | 5.1 | 16.9 | 20 |
| 125 | 5 | 139.8 | 6.6 | 12.7 | 40 |
| 125 | 5 | 139.8 | 8.1 | 26.3 | 60 |
| 125 | 5 | 139.8 | 9.5 | 30.5 | 80 |
| 150 | 6 | 165.2 | 5.5 | 21.7 | 20 |
| 150 | 6 | 165.2 | 7.1 | 27.7 | 40 |
| 150 | 6 | 165.2 | 9.3 | 35.8 | 60 |
| 150 | 6 | 165.2 | 11.0 | 41.8 | 80 |
| 200 | 8 | 216.3 | 6.4 | 33.1 | 20 |
| 200 | 8 | 216.3 | 7.0 | 36.1 | 30 |
| 200 | 8 | 216.3 | 8.2 | 42.1 | 40 |
| 200 | 8 | 216.3 | 10.3 | 52.3 | 60 |
| 200 | 8 | 216.3 | 12.7 | 63.8 | 80 |
| 250 | 10 | 267.4 | 6.4 | 41.2 | 20 |
| 250 | 10 | 267.4 | 7.8 | 49.9 | 30 |
| 250 | 10 | 267.4 | 9.3 | 59.2 | 40 |
| 250 | 10 | 267.4 | 12.7 | 79.8 | 60 |
| 250 | 10 | 267.4 | 15.1 | 93.9 | 80 |
| 300 | 12 | 318.5 | 6.4 | 49.3 | 20 |
| 300 | 12 | 318.5 | 8.4 | 64.2 | 30 |
| 300 | 12 | 318.5 | 10.3 | 78.3 | 40 |
| 300 | 12 | 318.5 | 14.3 | 107 | 60 |
| 300 | 12 | 318.5 | 17.4 | 129 | 80 |
| 350 | 14 | 355.6 | 6.4 | 55.1 | 10 |
| 350 | 14 | 355.6 | 7.9 | 67.7 | 20 |
| 350 | 14 | 355.6 | 9.5 | 81.1 | 30 |
| 350 | 14 | 355.6 | 11.1 | 94.3 | 40 |
| 350 | 14 | 355.6 | 15.1 | 127 | 60 |
| 350 | 14 | 355.6 | 19.0 | 158 | 80 |
| 400 | 16 | 406.4 | 6.4 | 63.1 | 10 |
| 400 | 16 | 406.4 | 7.9 | 77.6 | 20 |
| 400 | 16 | 406.4 | 9.5 | 93.0 | 30 |
| 400 | 16 | 406.4 | 12.7 | 123 | 40 |
| 400 | 16 | 406.4 | 16.7 | 160 | 60 |
| 400 | 16 | 406.4 | 21.4 | 203 | 80 |
| 450 | 18 | 457.2 | 6.4 | 71.1 | 10 |
| 450 | 18 | 457.2 | 7.9 | 87.5 | 20 |
| 450 | 18 | 457.2 | 11.1 | 122 | 30 |
| 450 | 18 | 457.2 | 14.3 | 156 | 40 |
| 450 | 18 | 457.2 | 19.0 | 205 | 60 |
| 450 | 18 | 457.2 | 23.8 | 254 | 80 |
| 500 | 20 | 508.0 | 6.4 | 79.2 | 10 |
| 500 | 20 | 508.0 | 9.5 | 117 | 20 |
| 500 | 20 | 508.0 | 12.7 | 155 | 30 |
| 500 | 20 | 508.0 | 15.1 | 184 | 40 |
| 500 | 20 | 508.0 | 20.6 | 248 | 60 |
| 500 | 20 | 508.0 | 26.2 | 311 | 80 |
| 550 | 22 | 558.8 | 6.4 | 87.2 | 10 |
| 550 | 22 | 558.8 | 9.5 | 129 | 20 |
| 550 | 22 | 558.8 | 12.7 | 171 | 30 |
| 550 | 22 | 558.8 | 15.9 | 213 | 40 |
| 600 | 24 | 609.6 | 6.4 | 95.2 | 10 |
| 600 | 24 | 609.6 | 9.5 | 141 | 20 |
| 600 | 24 | 609.6 | 14.3 | 210 | 30 |
| 650 | 26 | 660.4 | 7.9 | 127 | 10 |
| 650 | 26 | 660.4 | 12.7 | 203 | 20 |
JIS G 3454 Toleransi pikeun diaméter luar, ketebalan témbok, ékséntrisitas, sareng panjang kedah nyumponan sarat ieu.
Ti saprak diadegkeun dina taun 2014, Botop Steel parantos janten supplier pipa baja karbon anu unggul di Cina Kalér, anu dikenal ku jasa anu saé, produk anu kualitasna luhur, sareng solusi anu komprehensif.
Pausahaan ieu nawiskeun rupa-rupa pipa baja karbon sareng produk anu aya hubunganana, kalebet pipa baja seamless, ERW, LSAW, sareng SSAW, ogé jajaran lengkep fitting pipa sareng flensa.
Produk hususna ogé kalebet logam campuran kualitas luhur sareng baja tahan karat austenitik, anu disaluyukeun pikeun minuhan paménta rupa-rupa proyék pipa.
Mangga ngahubungi kami, kami bakal nyayogikeun pipa baja standar anu kualitasna luhur kalayan layanan anu profesional sareng efisien. Botop ngarep-ngarep tiasa ngalayanan anjeun.
