JIS G 3454minangka standar industri Jepang kanggo pipa baja karbon kanggo sistem tekanan kanthi suhu operasi maksimal 350°C. Standar kasebut kalebu rong kelas:STPG 370lanSTPG 410Iki ditrapake kanggo pipa sing dilas nganggo tahanan listrik (ERW) utawa pipa tanpa sambungan kanthi diameter nominal 10,5 mm nganti 660,4 mm (yaiku 6A nganti 650A, utawa 1/8B nganti 26B).
JIS G 3454 Pipa baja kudu diprodhuksi nggunakake kombinasi metode manufaktur pipa baja lan metode finishing sing cocog ing tabel ing ngisor iki.
| Simbol kelas | Simbol proses produksi | ||
| Proses produksi pipa | Cara ngrampungake | Klasifikasi lapisan seng | |
| STPG370 STPG410 | Mulus: S Tahanan listrik sing dilas: E | Rampung panas: H Rampung adhem: C Nalika resistensi listrik dilas: G | Pipa ireng: pipa sing ora dilapisi seng Pipa putih: pipa sing diwenehi lapisan seng |
Secara khusus, ana limang cara produksi:
SHPipa baja tanpa sambungan sing wis dirampungake kanthi panas;
SCPipa baja tanpa sambungan sing wis dirampungake adhem;
EHPipa baja tahan listrik sing dilas panas;
ECPipa baja tahan listrik sing dilas adhem;
EGPipa baja sing dilas tahan listrik kajaba sing dilas panas lan dilas adhem.
Baja Botopminangka produsen lan pemasok pipa baja karbon las berkualitas tinggi saka China, uga minangka stokis pipa baja seamless. Yen sampeyan duwe kabutuhan, aja ragu-ragu hubungi kita lan kita bakal menehi dhukungan teknis profesional 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% |
Ngidini tambahan unsur paduan liyane.
Kekuatan Tarik, Titik Luluh utawa Tegangan Bukti, lan Elongasi
| Simbol saka kelas | Kekuwatan tarik | Titik asil utawa stres bukti | Pemanjangan minimal, % | |||
| Benda uji tarik | ||||||
| No.11 utawa No.12 | No. 5 | No. 4 | ||||
| N/mm² (MPA) | N/mm² (MPA) | Arah uji tarik | ||||
| menit | menit | Sejajar karo sumbu pipa | Tegak lurus karo sumbu pipa | Sejajar karo sumbu pipa | Tegak lurus karo sumbu pipa | |
| STPT370 | 370 | 215 | 30 | 25 | 28 | 23 |
| STPT410 | 410 | 245 | 25 | 20 | 24 | 19 |
Tes Perataan
Nalika jarak antarane rong pelat tekan jarak sing ditemtokake H, ora bakal ana cacat utawa retakan ing permukaan pipa baja.
Kanggo tabung baja tanpa sambungan: H = (1+e)t/(e + t/D);
Kanggo pipa baja ERW: H = 1/3 D (kanggo las) utawa H = 2/3 D (kanggo bagean tanpa las);
H: jarak antarane pelat perataan (mm);
е: konstanta sing ditemtokake kanthi individu kanggo saben kelas pipa, 0,08 kanggo STPG 370, 0,07 kanggo STPG 410;
t: kekandelan tembok pipa (mm);
D: diameter njaba pipa (mm);
Tes Perataan ditrapake kanggo pipa baja kanthi diameter nominal luwih saka 40A (48,6mm).
Bisa ditekuk
Kemampuan mlengkung ditrapake kanggo pipa kanthi diameter nominal 40 A (48,6) utawa luwih cilik.
Pipa kudu dibengkokake 90° kanthi radius 6 kali diameter njaba. Tembok pipa kudu bebas saka cacat utawa retakan.
Saben pipa baja kudu ngalami uji tekanan hidrostatik utawa uji non-destruktif.
Tes Hidrostatik
Pertahanake tekanan tartamtu paling ora 5 detik tanpa bocor.
Nilai tekanan ana hubungane karo jadwal No. pipa baja.
| Kekandelan tembok nominal | Nomer jadwal: Sch | |||||
| 10 | 20 | 30 | 40 | 60 | 80 | |
| Tekanan uji hidrolik minimal, Mpa | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 |
Tes Non-destruktif
Yen inspeksi ultrasonik digunakake, kudu adhedhasar standar sing luwih ketat tinimbang sinyal kelas UD ing JIS G 0582.
Yen pangujian arus eddy digunakake, kudu adhedhasar standar sing luwih ketat tinimbang sinyal kelas EY ing JIS G 0583.
| Diameter nominal | Diameter njaba | Kekandelan tembok | Massa unit | Nomer jadwal (Nomer S1) | |
| A | B | mm | mm | kg/m² | |
| 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 kanggo diameter njaba, kekandelan tembok, eksentrisitas, lan dawa kudu nyukupi syarat ing ngisor iki.
Wiwit madege ing taun 2014, Botop Steel wis dadi pemasok pipa baja karbon utama ing Tiongkok Lor, sing dikenal amarga layanan sing apik banget, produk sing berkualitas tinggi, lan solusi sing komprehensif.
Perusahaan iki nawakake macem-macem pipa baja karbon lan produk sing gegandhengan, kalebu pipa baja seamless, ERW, LSAW, lan SSAW, uga jajaran lengkap fitting pipa lan flensa.
Produk-produk khususé uga kalebu paduan kualitas dhuwur lan baja tahan karat austenitik, sing dirancang kanggo nyukupi panjaluk macem-macem proyek pipa.
Mangga hubungi kita, kita bakal nyedhiyakake pipa baja standar sing berkualitas tinggi kanthi layanan profesional lan efisien. Botop ngarep-arep bisa nglayani sampeyan.
