GB / T9808 STM-R780 Kelurusan Tinggi Mulus Tabung Baja Dingin Diambil Untuk Pengeboran
Rincian produk
stainless steel presisi tubing
,Seamless Carbon Steel tube
GB/T9808 STM-R780 Tabung baja tanpa jahitan lurus tinggi untuk pengeboran
produk kami berlaku untuk pengeboran inti geologi,pengeboran sumur air,pengeboran hidrogeologi,bahan casing untuk pengeboran teknik,bahan inti tabung dan penyambungan casing tabung baja tanpa jahitan,Bahan pipa bor biasa dan sendi pipa bor tabung baja tanpa jahitanBahan pipa pengeboran dan sendi pipa pengeboran Tubes Steel Seamless,bahan kerah pengeboran dan sendi kunci kerah pengeboran Tubes Steel Seamless.
Ukuran:
OD:33-340mm WT:2-28mm L:4000mm-12500mm
Kelas baja:
ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740
Metode Produksi:
Proses penggulung panas (extrusion) atau penggulung dingin (cold drawing) tanpa jahitan.
Negara Pengiriman:
Tabung baja bergelombang panas (extrusion) harus dikirim dengan kondisi bergelombang panas atau selesai panas. Tabung baja bergelombang dingin (cold drawn)) harus dikirim dengan selesai panas.
Kualitas permukaan
Tidak ada retakan yang terlihat secara visual, rolling, lipat, bekas luka dan lapisan abscissi di permukaan internal dan eksternal pipa baja.
Tes:
Rasa tarik
Pemeriksaan ultrasonik
Pemeriksaan arus Eddy
Pemeriksaan kebocoran fluks magnet
Toleransi Diameter Luar dan Ketebalan Dinding
| Standar | Metode Produksi | Ukuran tabung | Toleransi | |
| GB/T 9808-2008 | Bergelombang panas | OD | (+1,0%D) atau +0.65 (-0,5%D) -0.35 | |
| WT | ≤10 | (+15%S) atau +0.45 (-10%S) -0.35 | ||
| > 10 | (+ 12,5%S, - 10%S) | |||
| Ditarik dengan dingin(bergelombang) | OD | ±0,50%D atau ±0.20 | ||
| WT | ± 8%S atau ± 0.15 | |||
| Q ((N) / T118-2010 | Ditarik dengan dingin | OD | OD | ±0,40%D atau ±0.20 |
| WT | WT | ± 7%S atau ± 0.15 | ||
Sifat Mekanis
| Tidak, tidak. | Kelas | Kekuatan tarik Rm/MPa | Menentukan kekuatan perpanjangan yang tidak proporsional Rp0.2/MPa | Persentase elongasi setelah patah tulang A/% |
| Tidak kurang dari | ||||
| 1 | ZT380 | 640 | 380 | 14 |
| 2 | ZT490 | 690 | 490 | 12 |
| 3 | ZT520 | 780 | 520a | 15b |
| 4 | ZT540 | 740 | 540 | 12 |
| 5 | ZT590 | 770 | 590 | 12 |
| 6 | ZT640 | 790 | 640 | 12 |
| 7 | ZT740 | 840 | 740 | 10 |
| aKelas ZT520 ukuran RP0.5 bKelas ZT520 menggunakan sampel tarik S4 S5 atau S6 dalam GB/T 228 | ||||
Aplikasi:
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