Siku stainless steel uga jenis tabung khusus stainless steel, utamané kanggo mbedakake wangun tabung sawise mbentuk, kayata tabung U-shaped, tabung J-shaped, tabung S-shaped, 90-degree sirah ula sikut, lsp.
1) Diameter njaba: +/-0.05mm.
2) Ketebalan: +/-0.05mm.
3) Dawane: +/-10mm.
4) Njamin konsentrisitas produk.
5) tabung alus: 180 ~ 210HV.
6) tabung Neutral: 220 ~ 300HV.
7) Hard tube: luwih saka 330HV.