การทดสอบ Static Pile Load Test โครงการ New Track Doubling Den Chai - Chiang Rai - Chiang Khong Section (Contract 1 : Den Chai to Ngao Section, Km.533+900 to Km.637+600), Phrae Province Test Pile : Bored Pile Dia. 1.80 m. Max Test Load : 2,000 tons Contractor : ITD-NWR Joint Venture Testing Company : STS Corporation Co., Ltd. (Pile Testing Business Unit : PT-BU)
