Petroleum Refining

Scenario 1: Petroleum Refining (Suitable for Crude Oil/Refined Oil Projects)

1. Core Requirements & Product Selection

 Oil Resistance Adaptation Key: Oil-resistant corrosion fittings and sealed valves are required for petroleum refining. We integrate resources from over 3 oil-resistant fitting manufacturers in China. Regular models (carbon steel + epoxy resin coating, DN65–DN150) are in sufficient stock and ship within 10 days. For projects with high-sulfur crude oil, we can coordinate 30-day customized sulfur-resistant coating models with Chinese manufacturers and provide sulfur resistance test reports to ensure long-term use.

 Product Specification Matching:

---Crude Oil Branch Connection: DN65–DN80 oil-resistant threaded fittings (elbows, tees, excellent thread sealing to prevent crude oil leakage). Chinese manufacturers uniformly produce coating thickness ≥0.2mm.

---Refined Oil Main Line Connection: DN100–DN150 oil-resistant flange fittings (flange joints + oil-resistant gaskets, suitable for large-flow transportation).

---Valve Selection: Oil-resistant ball valves (DN65–DN80) for branches (oil-resistant rubber-lined cores); oil-resistant gate valves (DN100–DN150) for main lines (resistant to frequent opening/closing). Based on crude oil properties, we match Chinese manufacturers specialized in corrosion resistance to provide customized solutions.

 Material Assurance: Fittings are uniformly made of Q235B carbon steel (carbon content 0.18%–0.20%, high strength). Chinese manufacturers conduct oil immersion tests for each batch to ensure no coating peeling.

2. Construction & Acceptance Standards

 Installation Specifications:

---Apply oil-resistant sealant to threaded oil-resistant fittings (specialized sealant sourced from Chinese chemical manufacturers, 8% cost increase); tighten flange bolts to 80–100N·m (torque parameter table provided).

---Install valves with arrow direction aligned with medium flow; position handwheles for easy operation. We provide installation case references from Chinese refineries for your team’s reference.

 Key Acceptance Indicators:

---Oil Resistance Test: Soak fittings and valves in crude oil for 24 hours with no coating peeling or blistering. We provide oil resistance test reports from Chinese manufacturers.

---Pressure Test: Maintain 1.2x working pressure (≤19.2kg) for 30 minutes with no leakage. A pressure test pump usage guide is provided to assist your team’s operation.

3. Common Issues & Solutions

· Issue 1: Valve cores wear quickly due to impurities in crude oil.

Solution: Install "oil-resistant filter fittings" before valves (sufficient stock from Chinese manufacturers, 15% more expensive than regular fittings). For wear-resistant alloy cores, 30-day customization can be coordinated with Chinese hard alloy manufacturers to supply cores and extend service life.

· Issue 2: Fitting coatings age due to high temperatures in summer.

Solution: Reapply oil-resistant coatings every 6 months (specialized coatings sourced from Chinese manufacturers, 5% cost increase). For high-temperature-resistant coatings (>60℃), 30-day customization can be coordinated by integrating high-temperature coating resources in China to ensure weather resistance.