50mm tebal Dinding Tabung Baja Karbon untuk Tujuan Struktural Umum
Rincian produk
Tabung Baja struktural
,cold formed steel tube
JIS G 3444 Tabung Baja Karbon untuk keperluan struktural umum
Standar: JIS G 3444
Kisaran ukuran: OD 5-420mm * WT 0,5-50mm * maks 12000mm
Aplikasi : untuk keperluan struktural umum
Tingkat Baja : STK290, STK400 STK500 STK490 STK540 atau sesuai permintaan pelanggan.
Standar yang relevan: KS D 3566 ASTM A500, A252, A501, BS 6323
Metode pembuatan tabung:
1. Mulus
2. pantat dilas
3. Busur otomatis dilas
4. hambatan listrik dilas
Metode finishing: Panas selesai, dingin selesai, Sebagai resistansi listrik dilas
CATATAN : Perlakuan panas: Jika perlu, perlakuan panas yang sesuai dapat diterapkan pada tabung.
KOMPOSISI KIMIA% maks | |||||
Kualitas baja | C | Si | M N | P | S |
STK290 | - | - | - | 0,05 | 0,05 |
STK400 | 0,25 | - | - | 0,04 | 0,04 |
STK490 | 0,18 | 0,55 | 1.65 | 0,035 | 0,035 |
STK500 | 0,24 | 0,35 | 0.30-1.30 | 0,04 | 0,04 |
STK540 | 0,23 | 0,55 | 1,50 | 0,04 | 0,04 |
Catatan: 1. jika perlu, elemen paduan selain yang ditentukan dalam tabel di atas dapat ditambahkan | |||||
PROPERTI MEKANIK min | ||||||
Kualitas baja | Kekuatan tarik Mpa | Titik produksi atau bukti stress Mpa | Kekuatan tarik di zona las Mpa | Perataan | Bendability | |
Jarak antar pelat (H) | Tekuk sudut | Jari-jari di dalam | ||||
Diterapkan diameter luar | ||||||
Semua diameter luar | Semua diameter luar | Semua diameter luar | Semua diameter luar | Maks 50mm | ||
STK290 | 290 | - | 290 | 2 / 3D | 90 ° | 6D |
STK400 | 400 | 235 | 400 | 2 / 3D | 90 ° | 6D |
STK490 | 490 | 315 | 490 | 7 / 8D | 90 ° | 6D |
STK500 | 500 | 355 | 500 | 7 / 8D | 90 ° | 6D |
STK540 | 540 | 390 | 540 | 7 / 8D | 90 ° | 6D |
Catatan 1 D dari tabel ini adalah diameter luar tabung.
Catatan 2 Standar sudut tikungan menjadi titik awal tekukan 
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