List of Articles خط لوله Open Access Article Abstract Page Full-Text 1 - Pricing Model of National Gas Exports via Pipeline on the Base of Game Theory Ali Akbar Naji Meidani Gholam Ali Rahimi Open Access Article Abstract Page Full-Text 2 - Comparison of the effect of thermal cycles on phase transformation and structure in the heat-affected zone of pipeline steel welding Gholamreza Khalaj