Steering joint model: 20491-30-12. Its surface treatment can withstand salt spray test for 72 hours. The internal thread of nut is M30×2, the outer diameter of pagoda joint is φ19.5. The pagoda joint is suitable for connecting to rubber hose with φ20 inner diameter or crimping hydraulic pipe fittings, and can rotate 360 degrees to facilitate the access of water pipes at all angles.