{"id":1331,"date":"2026-09-16T10:32:36","date_gmt":"2026-09-16T10:32:36","guid":{"rendered":"https:\/\/oiltio.com\/product\/drill-collar\/"},"modified":"2026-09-16T18:34:55","modified_gmt":"2026-09-16T18:34:55","slug":"drill-collar","status":"publish","type":"product","link":"https:\/\/oiltio.com\/zh\/product\/drill-collar\/","title":{"rendered":"Drill Collar"},"content":{"rendered":"<h3>Overview<\/h3>\n<p>OILTIO supplies drill collars for bottom hole assembly (BHA) weight and stiffness. The heavy-wall seamless tube base is rolled by Shandong Panjin Steel Pipe Manufacturing Co., Ltd., whose six continuous rolling lines (2 &times; &Phi;159, 2 &times; &Phi;180, 2 &times; &Phi;273) deliver 3,000,000 t\/a of hot-rolled seamless pipe in the range &Phi;32 ~ &Phi;356 mm &times; 3.5 ~ 40 mm wall &#8211; covering standard drill collar body sizes.<\/p>\n<h3>Quality Basis<\/h3>\n<ul>\n<li>Whole-process chain from steel making to pipe rolling ensures consistent alloy chemistry<\/li>\n<li>Magnetic flux leakage flaw detection (17 detector sets) plus NDT step in the standard process line<\/li>\n<li>Dimensional control better than national standard: OD deviation &le; 0.55%<\/li>\n<li>Every pipe hydraulically tested; enterprise standard stricter than GB requirements<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<ul>\n<li>Weight-on-bit provision and BHA stiffness for vertical and directional wells<\/li>\n<li>Available as bare drill collar stock or machined-to-configuration on request<\/li>\n<\/ul>\n<p>Contact us for available sizes and machining options.<\/p>","protected":false},"excerpt":{"rendered":"<p>Drill collars machined from premium heavy-wall seamless tube, produced on a 3-million-ton hot-rolled seamless mill with full NDT inspection.<\/p>","protected":false},"featured_media":1551,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[171],"product_tag":[63],"class_list":["post-1331","product","type-product","status-publish","has-post-thumbnail","product_cat-drill-tool-bit","product_tag-oiltio-direct-supply","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/product\/1331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/comments?post=1331"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/media\/1551"}],"wp:attachment":[{"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/media?parent=1331"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/product_brand?post=1331"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/product_cat?post=1331"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/oiltio.com\/zh\/wp-json\/wp\/v2\/product_tag?post=1331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}